Its so god damn sad that this is the norm now. That we accept this as a respectable practice. Had this game been on last gen, the Red Sons and Arkahm would be unlockable costumes. But now, its just more locked on disc dlc. You can't have it all, not unless you buy two copies of the game. Or just wait for the things we locked, you can pay for them later.
Also seems like they're going the BULLSHIT MK9 route with the costumes, where some more popular characters have more alts than others.
I hate the video game industry.