How about this. Make it so you don't have to find the upgrade, then pay a ludicrous sum of minerals just to implement it. I don't care if it covers the whole squad or one guy, if it costs 50K credits or 25K resources, a 10 percent boost ISN'T WORTH IT! That and leveling at the END of a mission were the only things I really abhorred in ME2. Top gun in 1 was a HUGE effective increase. In 2, you get like a 70% boost on some weapons if you played right, and a measly 15% from your armor with items that boost the same thing. Anyway, I liked the Mako better, at least then you could cruise around. And hope a Thresher didn't pop up and one shot you...