As @pharesim said plus, everyone uses their stake as they see fit. For this at least, upvotes wouldn't be considered to start with especially since it earns curation. It loses its impartial status.
It's almost like a policing of the platform, and that kind of power brings with it great responsibility.
Yes, and this is why the quorum could be a decent solution as it largely takes away the emotional stake.
the curation could be used to donate to a worthy cause/charity :)
FWIW I don't see much wrong with this idea, as long as it is implemented properly. You seem to have considered most aspects of this..
I am trying, all I need is a bit of support to get a trial up, if it looks like it doesn't work, so be it but for at least the largest of cases, it will be decisive and can lay dormant at other times.
and that's all you can do really - try and come up with a good idea, and try to get the support of enough SP.
FWIW you'd have my support - though I'm not sure my 2-3SP (~1% of my SP) would be much help
You should also consider throwing your hat in the ring as a witness... you seem to care about the direction of the platform, and that seems to be one way to get a louder voice..
That requires me running a witness node... I am not that capable :)