I'm OK with the Perk "sacrifice", I think the games flawed in that you buy up everything then lose it when you go down. Being able to see yourself get better throughout the game permanently and continually build yourself up would make the game more fun. Yes I know people will bitch saying it removes the suspense or whatever but I wont have a bar of it, not when the games just running in circles because you can't dare do anything else.
The whole "be a ninja" katana thing has been way overdone in games so I see a "katana" ie. reskinned sickle/bowie as meh, boring. And no, Lucas won't allow a lightsabre in game geez, nor would it be sensible.
The secondary is OK, though a lot worse then monkey bombs nor as believable thus I don't care for it.
Sentry guns would be great. Give you the tools to really hold down an area is what needs to be done.
"RC" helicopter (I assume automated not controlled), I guess it could work.
