Probably one of the biggest hurdles to that idea would be the sheer amount of dedication it would take to make a new Lucavi sprite.
But also, Rofokare doesn't really count as "dummied" content - the only thing in the game was his name, from what I've read up on the subject. The Sound Novels are dummied content - they were entirely present in the game, just not translated or accessible. If there was a partial event in the game with a partial sprite or something, I could maybe see it happening, but for just a name? I really doubt it.