I'm guessing most of you are familiar with load/save state? Well it's made the mod just about playable for me.
Just make sure your WB config has a pretty low amount of memory specified so the states aren't slow to work with (and avoid z3 ram, don't think UAE likes snapshotting that), then simply make a couple of saves at strategic points in each level.
Now there isn't the highly frustrating start over / lose entire squad for a stupid turret, more like an undo button
Some would call it cheating, I call it fixing the mod