As for a few decissions in the past the team needed to decide, there was some rumble on the board (as for instance merging forums, the banning of popular people, making new forums etc.). I can imagine for big decissions it can be wise to consult a group of people that are long time members or good trustworthy participating people, so that it will not be just the teams decission but we know its a widely carried decission.
A few things need to be said atm. It's just an idea i got just now and i didn't talk about with the team, but i sure would like to poll opinions on it. So it may never come to this! (but i still like the idea). Whatever the "senators" will do it will only be an advising role, in the en the decissions always will ly with the team and the final one with the admins. It's merely just an idea to start some sort of democracy on the board!
It's an idea burn it or love it but again it's just a premature idea