Alright, so I managed to go through your proposition Cactus.
Regarding the stages... I'm still thinking that we should only have 6 stages (BF/DL64/FD/FoD/PS/YS), either in a 5 starters + 1 CP (PS) or better, 6 starters and no counterpicks with a gentleman's clause or a random selection to choose between the right two stages.
But I won't go further into details, as most of the pros and cons of every stagelist has already been discussed. Also it doesn't matter that much since this ruleset is a recommendation.
I'm just gonna nitpick a bit for some other things.
Regarding the port selection :
I'd sort the list of neutral ports according to the name of the stage, not of the port. If a player looks for it, he's gonna search the stage first.
What if a sudden death happens because of a kirbycide/koopa claw ? (I'm not sure it's possible with the koopa klaw, though, I pretty much always die first when I do it

)
What about controversial topics like wobbling ? Or simply stalling ? Maybe we should add something saying these kind of decisions are up to the TO.
Should we add something about controller modifications ?
And by the way, I don't know how much it has been discussed around here, but what do you guys think of the trigger trick ? Same for this thing where you cut the directional stick to do better DIs (the one Manacloud used to rip people off

)