This change is good and sucks too. On the one hand it makes upgrading your tank a little easier but in my case I have hull now stuck at 50/50 until I can save 100000 crystals to jump from M0 to M2, because M1 is not an option anymore. A little unfair for those of us who have used 1 primary tank setup for most of the game and have a few 'extra' options we've been slowly building. :(