I plan on sticking bandages in basically all my stages. No throwaways though, that would be lame. It would be cool if they made some Meat Boy skins that were unlocked by getting bandages in Team Meat approved custom levels, but they already said bandages won't do anything
Major Edit: From their twitter
@RockLeeSmile we are still working on that aspect. at launch bandages in levels will do nothing
Let the speculation commence!