Why would plebeians being elected as consul be good for the common people?

Explanation:

It was good because the rights of common people are protected and defended by the plebeians. The people felt safe because they have representatives to fight, to protect their rights as citizens. It was a great chance of not being isolated and marginalized.

They had a voice, the voice of the plebeians, they are treated fairly and justice for any matter. The election of plebeians it was a small step of democracy.

powers  are  denied  to the  national governmentin three distinct ways: some  powers, such as the  power  to levy duties on exports or prohibit the freedom of religion, speech, press, or assembly, are expressly  denied  to the  national government  in the  constitution.

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