In no particular order, other than being worth a visit:
Paganella bike park overlooking Lago di Molveno – plenty of lift assisted riding.
Canazei. You’ve been there, but it’s good.
Kronplatz. Essentially just the trails, but two of them you can spend all day perfecting (over 1000 vertical metres).
Bozen/Bolzano. Beautiful old town with lift assisted riding.
Reschensee/Nauders. Worth a few days. Mix of natural and shaped lift assisted.
Vinschgau. Lots to ride, but lots of climbing, too. A few shuttle Co’s.
Latamar Runde. Big mountain, the Latamar. Bit like the Big 5,but in natural trails. Not far from Canazei.
All of those are on the Italian side.
You’ve only to look at Trailforks and compare Austria to Italy to realise how crap Austria is for riding. Bavarian alps are just as bad. So much potential, but slow to catch up. If you ask at the tourist office the mtb that is being peddled is stuck in the 90’s.