Thanks for comments, not had any bad yet so I am concerned ;-)
Well I don't want to discourage you too much, but this kind of discussion has come up many times in the past, and each time it has been shot down by one or more of the fractured Amiga groups for multiple reasons, so I would not get your hopes up too high, until you see some agreement and cooperation from the developers in control of each separate group. I was one of the naive people that put out a call for unification, or at least cooperation in the past, so I applaud your sentiment and efforts and hope that it is received better now than it has been in the past.
The divide between many of the key people on each side is (or was) very intense, and you know how difficult the ego's of many developers can be to deal with. Also, how do you plan to gain the trust and reassure the members that the money collected will not be misused?
I wish you good luck in your endeavor.
