Having 4 characters in Heavensward myself, I'd welcome a way - any way - to skip the story between praetorium and Heavensward, because as much as I like leveling alts, I can't bring myself to do the MSQ again. The part before and after that at the very least helps you level by giving you a decent chunk of XP per quest, that part is just pointless porting around skipping cutscenes you already know while not making any noteworthy progress. There are no meaningful choices to be made in the MSQ either, so there's no reason to look at the cutscenes again.

It's a chore I'd really rather see gone "somehow-anyhow".