I really only play one character, so character unlock/account unlock is the same thing for me. That said, yes, I'd love to be able to dismiss some of the older lockbox ships I'm not using anymore, but still be able to reclaim them if I ever feel like flying them again. Same with fleet ships.
The Secret World requires you to have completed every dungeon on elite, and then you have to beat a nightmare level boss on your own in order to unlock nightmare mode dungeons. It's a feature that would be handy in every MMO.
You can dance if you want to. You can leave your friends behind. 'Cause your friends don't dance and if they don't dance, well, they're no friends of mine.