Kawento

I vote no. I want something different and if it is fantastic or mythological, better.

I want a space hamster! Great update, the more information I have, the happier I am backing this project.

I don't see the need for any of them. I think it would be more interesting if paladin was a title that fighters or clerics could earn doing quests for an order or temple. Maybe even reward that title with some especial powers. The bard could be implanted in a similar way, not selecting that class from the beginning, but earning it trough roleplaying.

Yes, as long as they fit the setting and don't destroy the balance of combat.