From the outside looking in, the issue to solve will always be who has the most money to throw at their own elevation or for those of their choice (with future influence implied). How may this be constrained to ensure positions are earned, not bought? One has only to look at the run-up to America's election last year to see this is patently not under control.
Plus, how do you justify having a Vice President without any mandate whatsoever bar the personal choice of the would-be President, no guardianship over their intent to work for the benefit of all the people of the country, and yet implicitly able to become President?
How will your proposed communal government sort out/approach that situation? And shouldn't this anomaly be addressed in any form of government?