Ah it seems we've both been busy lately. And sorry you feel that way buddy, I know the discussion mill has been a bit slow since we don't have much to speculate until the 1st DLC arrives. Agree Goemon does deserve the support, I really hope he will get his chance in the next Smash Bros. I decided to support FF15 one of my favorite games despite my sadness its coming to an end and I may never know what the Omen trailer meant. I had hoped the DLC would tie the holes in the story together, but at least Im getting episode Ardyn.
I think Nintendo could possibly push for a Dragalia Lost character as that is the mobile game that has been around longer. I still see them pushing for a FE Three Houses rep, but we will see. As for any other characters maybe Banda Dee due to popularity, other than that I don't see any characters being pushed. I really doubt we will get a Arms rep now that Spring Man is an assist. As for Xeno unless its Elma, I don't see us getting anymore characters from Xenoblade. As for who I expect Nintendo to put in for the DLC that would be Edelgard and maybe Bandana Dee (not really sure on the second).
I don't see Nintendo adding the Dhovakin to Smash Bros, as interesting as he would be. The music of Skyrim and Elder Scrolls as beautiful as it is, does not fit with Smash Bros. Neither does Dhovakin fit with Smash Bros, also Bethesda might not want to push Dhovakin. As they are making a new Elder Scrolls, so if Bethesda got a rep maybe Vault Boy (I don't see Doom guy working at all). If Im wrong about this I'd love to see how they would blend the amazing orchestral music of Elder Scrolls, with the less seriousness of Smash Bros. If you have seen any of Riftley's Youtube content he has proven Elder Scrolls music can be mixed in with other types of music, so its possible.
I don't know if a Square Enix rep will get 5 pieces of music as amazing as that is. Id say for Square rep 2-3 songs, if its DQ character I agree only 1 song due to Sugiyama's influence in that decision. For all of the other characters that are third party I could see 4-5 pieces of music. Anything more, then those companies would be really generous. As for Nintendo characters I could see them getting 4-6 pieces of music with their inclusion.
Heres a blend from Riftley of Skyrim's theme being blended with Assassin's Creed Black Flag.