Just a user point of view: When a user decide to restrict the packages on his system to "stable", I think the user expect stability in the sense works properly under most (if not all) situations. Therefore, for a user, if real stability demand a lot of restriction, it is a price to pay. I think it would be harsh to stabilize buggy software just because it is able to run with the distro defaults (especially when defaults mean so little to a distro about freedom of choices). At the very least, if stabilization of 3.6 is really something a lot of people here are looking forward for, it should probably be a fork since the work required to maintain it will be that of a full project anyways (i.e. call it gentoo-gnome or something similar).
Also, I think the problem here is more idealogy than anything else, people who do care about keeping OpenRC should leave Gnome IMHO (like I did myself), I mean they will need to switch to systemd or change environement in the future anyways. Because, even a gentoo-gnome project won't have the manpower upstream gnome and upstream systemd have and will probably be full of frustration for users... Damien