.I think that if you picked ar8/9 for slow part before kiai most of players would be thrown of by sudden change of ar even if warned previously and thus very bad.You'd be suprised how many people can read Taiko AR/Scrollspeed changes without too many problems. Not too different for Std I'd imagine. People are already able to read heavy timing changes on extremely difficult maps (https://osu.ppy.sh/s/280107#), which, if you turn a few things, is basically comparable to an AR change on a steady BPM
And since my opinion obviously wont change until i see the results please stop this pointless whatever it is.
Also, you're basically asking for answers and that's what Im doing.
If making a storyboard is more work than it's worth for, really, then creating a whole new osu format is certainly more work than it's wort for, really.Shouldve pointed out that I'd probably too much work for me, as I dont know much about storyboard - so I dont have much to object to that (maybe?).
Storyboards can use your skin. They just usually don't because the easiest way to make a bad storyboard is to have the storyboard interact with the hit objects like 11t does. I could make it work with a few skins, but it's easy to just force a skin and let the player modify the skin like in blythe. Obviously this would be done via SGLE or in excel. It's not a difficult process and would take 2 minutes to make a change via excel or 30 seconds compile time to make a change via SGLE.
Also, I'll just leave this here: https://www.youtube.com/watch?v=Hromx6HeN_w
I'd agree on baraatje's post above though.