It would be nice to have this route in Tsw. It is 275 km long but they could do the Brennero-Innsbruck segment. We could have 2 important railway companies ( FS and OBB) and other smaller-ones. The trains could be ETR170, the OBB 1216, the E412, the E483/464 and the OBB railjet and the ETR610.
I'd argue that the Brenner - Bolzano section would be better, as the journey time is an hour rather than 40 minutes