The thing I don't get...
Who cares if it's made on one layer?
I mean..it's like walking around with your eyes closed and saying 'look at me I can almost walk straight" or you could open your eyes and run....
My point being, you've got a great piece of software and your making sub standard animation and passing it off under the premise that its made in one layer...big whoop!
Use as many layers as you want and make something decent.
Besides that the whole thing was just pointless...a few random animations thrown together..i mean collabs are great when done properly..but why dont i just grab a few animations out of the portal, stick em together and call it a collab? Is that really a collab..i don't think so.
So..my advice...use some layers, have some connection between all the animations and make something awesome.
And yes..thats only my opinion.