Why a small, experienced team often outperforms an agency on strategic projects

When a management team or board decides to strengthen its marketing, the discussion almost always opens with the same options: hire in-house, brief an agency, or bring in independent experts. The third option, and in particular the model of a senior marketing expert collective, remains largely underestimated, even though it often responds better to the demands of strategic projects than either of the first two.

This article does not argue that agencies are ineffective. It raises a more precise question: on what types of projects, in what contexts, and for what reasons does a compact senior team produce better results?

A marketing agency is a model built for scale and repeatability. It excels at deploying standardised campaigns, managing volume, and maintaining a production cadence. Its strength is organisational: established processes, shared tools, multidisciplinary coverage under a single contract.

But this model carries a structural limitation that becomes visible as soon as a project moves from operational to strategic. In an agency, the senior profile who sold the engagement is rarely the one who executes it. The client buys expertise; they receive delegation. This is not a criticism. It is a rational economic mechanism. The agency needs to run a margin-based model, and that model rests on the leverage of junior or mid-level profiles trained in-house.

The problem arises when a mission requires judgement, perspective, the ability to challenge business assumptions, in short everything expected of a true strategic partner. At that point, the agency delivers what it can: qualified execution, not co-construction.

A collective of senior marketing experts operates on an inverted logic. What is delivered (marketing diagnosis, marketing plan, oversight) is produced by people who have built their expertise over ten, fifteen, twenty years on comparable projects. There is no intermediary between the competence and the client.

This changes the quality of the work across three dimensions.

The first is speed of contextualisation. A senior expert does not need several weeks to understand the challenges facing a B2B SaaS scale-up in a commercial structuring phase. They have already lived through them. They recognise the signals, identify the blind spots, and ask the right questions from the very first exchanges. What an agency would take two months to model, they synthesise in a few working sessions.

The second dimension is the ability to engage in genuine peer-level dialogue with leadership. A CMO, CEO or CFO is not looking for a supplier who executes instructions. They are looking for someone who can challenge their go-to-market assumptions, validate (or question) their reading of the market, and hold a position. That level of dialogue is only possible if the partner has themselves held leadership roles, managed significant marketing budgets, and navigated comparable growth cycles.

The third dimension is operational compactness. A compact marketing taskforce does not need to bill hours for internal coordination meetings, briefing sessions, or cascading copy reviews. Decisions are short, the validation circuit is direct, and responsiveness is structurally higher. Fewer people in the chain means more signal in the delivery.

The agency vs. expert collective comparison is not universal. It depends on the stage the company is at and the nature of the project.

For a company in hypergrowth mode looking to structure its marketing for the first time (establishing solid positioning, clarifying its value proposition, defining an acquisition plan aligned with pipeline objectives), seniority is central. This project does not tolerate approximation. A poor positioning decision at this stage can cost twelve to eighteen months of delay in commercial development.

This is precisely the type of mission where the senior expert collective model creates the greatest gap with the traditional agency. The agency proposes a plan; the senior expert runs a diagnosis. The agency builds a presentation; the senior expert builds a line of reasoning. The agency delivers a document; the senior expert puts their reputation behind a recommendation.

Conversely, for purely operational projects (producing content at scale, managing large paid campaigns, maintaining the SEO of an existing site), the agency remains a rational choice. The two models do not compete across the full spectrum. They compete on projects with high strategic value.

One of the arguments most often made in favour of an agency is the ability to cover everything under one roof: strategy, creative, media, data, digital. This single point of contact looks attractive on paper. In practice, it often generates a dispersal of value.

The full-service agency is generally excellent at only two or three areas of competence. The rest is subcontracted, internalised with less specialised profiles, or simply less rigorous. The client buys an illusion of completeness, when they would have been better served by assembling a targeted taskforce: a growth strategy expert, a go-to-market specialist, a demand generation profile, each at the seniority level the project requires, brought together around a shared objective.

This is the principle behind Hirondo. Not an agency, not a traditional consultancy: a network of senior marketing experts, operational and complementary, capable of forming a tailored team based on the client’s specific challenges. This model captures value where it is actually created: in individual expertise, judgement, and each expert’s personal commitment to their recommendations.

If you are CEO, CFO or CMO of a B2B or B2C scale-up, and you are thinking about the best way to strengthen your marketing over the next twelve months, the question to ask is not “agency or no agency”. The question is: what level of competence does this project actually require, and in what form should it be delivered?

If the answer involves marketing diagnosis, challenging the positioning, building a structuring marketing plan: seniority is not optional, it is a prerequisite. In that case, a collective of senior marketing experts, structured as a network and activated as a taskforce, is often the most rigorous, most responsive, and most aligned model for your challenges.

The scope of a high-performing marketing function has widened. The ability to generate pipeline, measure marketing ROI, and align marketing and revenue all require profiles who have already navigated these waters. It is not the size of the team that makes the difference. It is the depth of expertise it carries.

Are you evaluating your options for organizing or accelerating your marketing efforts?

Talk to a Hirondo expert who can guide you!