RDM other than the awesome AF, never really appealed to me to play.
THF on the other hand was really awesome. AF was kinda meh, but as a class, pulling, putting up big burst numbers to help with enmity was really cool and made you feel a part of the group...that is, when groups realized what you could do.
So yeah I'd like to see a THF type class and hopefully, eventually, an expansion with a NIN or SAM or something with a katana and wakazashi.