[Hattifnatt]

have only read the OP but here is some thoughts of mine:

to make it clear the rules should just be: winning the pot with 72o or 72s and get something from everyone no matter how the pot is won, including getting a walk in the bb.

if its NL one big blind from everyone sounds to small. I think something along the lines with ~2-5bb is the wtg.

I dont think the 7-2 game should be somthing that is going on all the time in a game, just from time to time because it makes the game somewhat different.