There is alot of ways to edit the scheme to reduce luck factor, make more of SD weapons or remove them at all as a simple example, but imo there should changes like removing suicide bomber (there is no kamikadze on scheme on same time when its really kind of useful weap as for SD), or skunk with pistol are really terrible to get for me at least..
IMO all ploppy weaps (dyna, cow, sheeps, holy and so on) must have 1 turn delay! Because its f@#!ing drivel how you lost half of your team before you even get a turn.
What about experimental scheme with infinite worm selects? Its like you get some crate with one worm, hide him, select another run with him from pile, then another select and you attack, scheme will be much more dynamic, those tele to crate, tele to crate, tele to crate, crate+block, unblock +crate, and so on become really boring after 2-3 games