The model specific gameplay mechanics aren't getting added because it goes against mb2's core design for open mode, this has been discussed before and firmly rejected by the devs.
Model and hilt suggestions etc are completely fine as well as a lot of gameplay suggestions, but most of your ideas...
Everything in the first section has already been suggested in some form and is a hard no from the devs, you're not gonna get anywhere with that. (model dependant gameplay features)
Pushing all nades is the same, has already been suggested and is never going to be added.
I believe gunbash on...
He meant that the shot got deflected from the blue, and hit the pink guy in the push window, not that it directly hit the pink guy, it was a question of block angle and deflection
make sure you have tried opening the game up to 10 times, a common bug with jamp+steam is an immediate close after launching which works after a few tries