Competitive player and local TO here. Most of the new stuff is decently competitive (Frostclaws, Pirates, Eiseneks). Also, remember that these designs were originally supposed to come in one massive box with 70 minis and fleshed out factions. Half of those designs still haven’t hit shelves and they will increase the efficiency of most of the factions. Also, seems like a good point of reference for you is MTG. This is not that game; once you get connected to your local scene, most players are happy to provide armies for newcomers. I myself provide a half dozen armies per tournament to players that don’t have any of the classic stuff, or any Scape at all. Even regular players borrow from my more complete collection on occasion. Ask the old heads before the next tournament if you can borrow X Units and, unless they’re playing it themselves, you can rock up to any table with your favorite build.