Just a quick suggestion from me. They should make the ICE 2 a standalone add-on, or include it with a potential Hamburg-Hanover route, since Train Simulator 20XX's Hamburg-Hanover route had it.
Hamburg to Hanover is a definite support from me. I often spend a week in the summer at Hamburg-Harburg station watching the endless streams freight from Maschen to the docks and far and beyond. It would make a stunning Route and with incredible amounts of DLC potentials like the ICE 2 and Class 193s and the Metronom Class 246.