Quick message....
1. Turn Maemo (community) into a corporation, with GA on top and BoD(or whatever it is called in german) as executive body. In this scenario I don't see (or didn't get it) what exactly role has the community council. If GA is "the community" that tells BoD what to do, there is really no need for another entity doing the same. And how's that going to work legally. So maybe completely removing CC in this scenario is the sanest thing to do.

GA are ordinary members of e.V., right? And do they need to disclose their full names, to join e.V.? Do they need to pay membership fee aka Mitgliedsbeitrag ?

If yes to all three questions, then GA is not going to include all members of maemo.org; only a small number, larger than Community Council but still a subset of maemo.org members. So, as far as I understand it, HiFo board is replaced by e.V. Board, and CC is replaced by GA; GA elects Board, and anybody can join CC.

Community members are not forced to be members of e.V. They can be registered on maemo.org without joining e.V. Right?
And there are other websites, such as my-maemo.com. Further splitting is not exactly helping, though I understand that having all eggs in one basket is not exactly safe.

[EDIT]
Where/when is/will be the web page for joining e.V.? For e.V. board elections?

Look forwards, not backwards. If HiFo board decided to hands everything over to e.V., no amount of arguing can force them to remain as HiFo.
[/EDIT]

Best wishes.
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Per aspera ad astra...