So I ran a few experiements and you can almost do this the way you might be imagining, however there is no slip feature to next region or hotkey to make it a bit more efficient. So I will make a post for a feature request as I think it will be great to have.
Right now you can make your hitpoints into regions and then you can “shift right click” and you should get the ability to switch different regions. Called “Set to region” - it will show up as long as the event has regions. So you can copy paste a new sound set and then change and mix match different regions. I would definitely want a hotkey for this as I coudn’t change more then one at a time and have to always go into the menu to do it. I coudn’t make a macro or project logical editor for it either so far.