Because I'm fond of the character being a fan of the series, this is the reason beacuse I would like a roster where no character are left behind. Off course, from a gameplay point, I understand that a new character would be a better choice and that the clones don't have the priority, so I agree with you.
But in this moment it's excluded that TN will work on a new brand character, in addition Raidou will not take how much time to them given to his particular nature, so I don't find a problem asking for it.
Only reason I don't want to see Raidou / Genra etc. Is because rehashes of other characters makes the game very bland. A brand new character new style and everything makes the game not only interesting to the viewers, but the ones playing the game as well.
PS: But I'm asking also for new stages.