Brutus believed that having too few representatives in the legislature would lead to several serious problems:

• The small number of representatives would expose the legislature to corruption and undue influence, including bribery. With so few members, just a small majority could make decisions affecting the entire population, creating a government of the few oppressing the many.
• Citizens would have very little connection or acquaintance with their representatives. Most people would not know the character or qualifications of their legislators since the representatives would be distant and largely unknown to the people they represent.
• Representatives would become an elite distinct from the people, pursuing interests separate from those of their constituents. This distance would foster perpetual jealousy, suspicions, and resentment from the populace.
• The legislature would be less accountable, lacking close ties to local communities and unable to explain or justify their laws to the people. The government might lose popular support, necessitating rule by force or leading to its collapse.
• The limited number of representatives would reduce the possibility for meaningful popular influence and control over the government, threatening liberty.

In sum, Brutus feared too few representatives would result in a corrupt, detached, and tyrannical legislature disconnected from the people it governs, ultimately endangering freedom and self-government.