This reads quite naive; if you want a legal entity to be ideologically driven then it needs to be controlled by a small number of ideologues. Committee-like structures tend to mean revert to a reasonable position that bows to financial pressure. Structures guarantee longevity, but the ideological underpinnings of the that longevity tend to stray.
One of the major lessons of political history is it isn't possible to structure your way out of a situation where there is an incentive to do something. If Boris Sienenthaler has proven to have good judgement it is a much better idea leaving him in charge than re-rolling dice. Any institution quickly becomes a corrupt shadow of what it was originally envisioned as once the original people involved move on.