It would be an upgrade, but I don't think it would be what it could be. FPX could actually be a really good team. zehN I think is a genuine tier 1 rifler, he has rather good aim. farlig's aggressive AWP style is also really interesting, although I wouldn't mind dropping him for a more consistent AWPer. maden is a fucking wonderful entry player, again I think he could actually be tier 1. Lekr0 has proven time and time again that he can be tier 1, and taking STYKO out for him would be a great change. Also as you said Sunny probably won't be permanent, so adding an experienced IGL can really bring the team to the top imo.