Any incentive that would unite the community (that is rather spread out) is a
good idea, the question would be, will you have enough participants for it to
be worthwile.A few years ago i addressed "somewhere" a similar project that
would put all GNU/Linux Libre distributions under one umbrella/Forum
(FreeSlack, ConnochaetOS, LibertyBSD..ect).
Why a Forum ?
Why not some other form such as here : https://linuxfr.org/
If you are developping Uruk wouldn't this be a bit strenous ? ie taking quite
some time of yours ?