I loved JA2 - does it have the same storyline? I wished it had a little more roleplay at times like Fallout 1&2 did or Diablo, but you could overthrow a small south american country and get PAID - who doesn't want to do that? Many a RPG I ran had some strong roots in the JA2 storyline, which seemed to me equal parts 7 Samurai and The Good, the Bad and the Ugly.
I really got into buying/ selling guns when I played JA2 - so made me feel like a real merc, lol.