Via storyboard? It's more work than it's worth for, really. I wouldnt want to skin an universal skin (people use different skins, remember that) and fiddle around with every single object Ive put down. Modding would be hell as well if you have to move objects around.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.
As you mentioned, most people play with full dim and no video/sb anyway, so there's not much use in that. As a gimmicky map though? Well, yea, maybe. If someone feels like doing that. I know I dont.
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