since we have several ongoing projects involved with 68k gfx solutuions, i would just mention wazp3d by alain, warp3d voodoo/mediator hw optimization-fix by matthey, sdl by bernd r, graphics.library with planned gfx support by cosmos, not to mention some approach on aros that might come handy like gallium 3d by deadwood (am i right)... i think it is nothing wrong to call together an initiative to unify the graphic standard as open source.
whoever will pick up this subject - for what i see from last year experience - there will not be many people to attend. there will be an one leading dev. no questions asked. but there is a spirit of cooperative support already. the only chance is to improve something. if it goes broken we will just have to stick to what we already have anyway. so : no risk, only gain possible.
i vote : yes-!