That's the only limitation, the forum settings are set so that your edit button expires after 24 hours since initial post. Most other general forums have been set so that the OP can re-edit his/her post an indefinite amount of time.
The only way to bypass this (crudely) for now is to have a moderator edit the post for you, since the edit function is indefinite for them. But that's kind of a hassle and I don't think both parties would be willing to compromise for that in the long run.
So the only real option (as for now) is to discuss each and one of every member till we reach the end of where everyone wants to be, then I can create the finalized list and post it from there, or as some other topic.
ooh! An old one! Welcome back!