I'd make Maynard stand up straight and start writing nasty lyrics again, Danny play a 4-piece kit, Adam can only use standard tunings. Justin I'll leave alone.
Paramore. I'd put guns to all their heads, get them to work on their chops and turn them into a modern prog rock band.
Probably mostly for the lulz really.
Would love to see the reactions of the teenage girl fanboys when they find out the songs go longer than 8 minutes.
The ultimate real life trolling.
Getting paid and getting major lulz > just getting paid.