I'll build my Steel Brigade troops from what I can find in-store. Same with the Cobra troopers. The BBTS troop-builder prices are simply prohibitive. I love the new one, but I also was absolutely fine with the old one, too. I've bought every blue shirt with the black mask that I've seen (and some of those silly red-masked ones... Tamiya black and clear coat does wonders in making them consistent!). The new one is an improvement, but will still fit in just fine with the old ones. Not like it'll make them obsolete.
I've always wanted an army of blueshirts, so here's my childhood wish fulfilled as a man-child.
I'll get maybe 3-5 Steel Brigades if I can find them. Same with the Rock-Viper, although I'm hoping that Slayer makes a head for that guy. The new one looks fine, but I'm an ARAH fanatic. I want to make a few, one with the 'stached head, and the rest without a stache. I'll buy whatever I can find of the blueshirt, but the Viper is alright. I probably won't troop build him, or that B.A.T.
I love the B.A.T., and it's one of my favorite 25th figures... but dammit, enough is enough. I'm getting one because I got the full case set, but otherwise, I wouldn't even want it.