Yes, I would buy some. Battletroops was something that I either completely missed out on, or it wasn't really supported. Yeah, I'm that guy that brings it and the ccg up once every so often:P
It is that every generic "if you build it, they will come". People like minis, not paper stands. Paper stands are cheap, easy to make, so on and so forth, but part of this game for me since I was 16 has been about the minis as well. I keep telling myself that i am going to find a group that plays BT. I honestly want something for each scale of BT, instead of going with paper pieces or filling in with odd sized minis.
I haven't bought much for some time, and that might sound bad, but I am inching closer to getting into a position where I can actually go and buy stuff when I want without having to worry about every penny.
If I can find a store that is "local" that supports BT and carries the Battletroop/ATOW/whatever you want to call it, I will pick some up one by one. By that I mean I would suggest avoiding selling in large sets. I can easily justify spending $10, but $50 boxes gets me to walk away grumbling. As I have said about other things, I would sooner buy 5 x $10 items then 1 x$50 item. Its just how I am.
Battle armor and standard infantry minis would be what I would want. I don't care much for the old mechwarriors and such that I do have sitting around. I also wouldn't see myself using them to often in a game, basically because if I used them in a game it would be the "tactical" scale or BTroops style gaming, not role playing.
Minis that I would look forward to would be the original battle armor suits, the sloth and the infiltrator MK I. Then the original house variants of the toad. Merc/Generic foot soldiers, house specific soliders, heavy weapons+crew. In that particular order.
Someone mentioned the armor cast scale minis? I would love to see either a foam/resin/plastic/metal kit for a tank and a mech. I probably wouldn't buy them any time soon, unfortunately.