MKSheppard, thanks a lot for taking the time to convert all these to mini-rulesets !
In vanilla TFTD + XComutil, I enjoyed a lot the improved Heavy Explosive, I even made the weight so considerably higher that a soldier could barely carry one. For assaulting ships that have a hard entrance, it was very fun walking a lone bomb-carrier to the sub (he can't throw it more than a tile or two), set the timer to 3, run the hell out of range, watch the screen-sized explosion that leaves a crater in sand with a lot of bubbles - and still a single-tile opening in the ship's hull.
I played an OpenXcom game with the improved heavy laser, at first I loved having one more choice for soldier setup, but it's a bit overpowered... I'm up to facing Mutons and Chryssalids, and don't feel the need to use plasma weapons yet