Multiselection is a "nice to have" imo, but not crucial.
I mainly was curious if this stuff was incoming due to the recent update making changes to touch/pen.
I feel there's an easier approach than needing to heavily modify the event sheet view, but maybe I am missing something. There's already a dedicated global "Mobile mode" that allows the windows to pop out from the sides of the screen, so I'd have thought this wouldn't affect the general desktop user.
What about a scroll area on the left side of the event sheet view that scrolls JUST like it does when using touch, but then the rest of the event sheet view is treated as a mouse with click/select/drag? For a sacrifice of squishing the width of the event sheet view slightly, it would grant fuller functionality.
E.g. In Construct terms: if touch.x < viewportleft()+64 then "SCROLL" , else "BEHAVE LIKE MOUSE (I.e. Tapping would select, dragging would drag the events/actions)
I like to think this would be relatively straightforward to implement as the "touch scroll" code already exists in c3, as well as how mouse behaves within the event sheet view.
You could scroll with your left thumb and you could hold onto a drag with your right thumb and just drag n drop like you would with a mouse.
If it's complicated then I will stop chasing this as it probably is a niche suggestion that won't get much attention, I just hoped a basic method to drag n drop could be thrown in for mobile users.