I have considered that it might be worth taking a percentage that goes to the top 20 and spreading it to 21-30 to encourage higher quality witnesses there.
and they stay there almost indefinitely. They are placed and kept there basically by the strongest vote of the biggest stake holders of the chain whose own interests do not necessarily represent the wishes and expectations of the rest of the members of the ecosystem.I would have to agree with what @tarazkp has said above. Simply because it's already more than evident that in a DPoS blockchain system, the Top 20 witnesses who reach those first positions in the ranking
In my opinion and especially if it is a blockchain in which a "social network" is the main DApp and stellar figure in the whole ecosystem, opulence and the maximum amount of money should not always have the last word in the consensus and the general decisions of an entire community.