My sentiments exactly. Even Crash is kind of iffy to me (this is coming from a life-long Crash fan, mind you, so nothing against the character), so you can only imagine my thoughts on characters like Snake and Bayonetta. I'm not adverse to third-parties, but, in my opinion, they need a darn good reason to be in, and "my friend Kojima asked me to do it" and "Nintendo felt like producing a sequel to a niche property for some reason" aren't good enough reasons to me. Of course, regardless of my feelings, Snake and Bayo are veterans, nonetheless, so I'm happy for their fans that those characters are back.
That being said, it would be perfect if Ultimate's development was all about the heaviest of hitters (Inkling, the mascot of Nintendo's newest titan since Animal Crossing, and a character that everyone was both expecting and excited about; Ridley, the antagonist of a longstanding series who has been desired as a playable character since the second Smash game; Simon, Konami's "Mega Man" who is often associated with classic Nintendo; King K. Rool, a fan-favorite villain the world over who has been snubbed for the past ten years; possibly Geno, a nearly historic one-off character for whom the stars are aligning; every veteran, so no one has to worry about their favorite character being on the chopping block; plenty of clones to bulk up the roster and give fans of those characters some extra/easy fanservice), while DLC focuses on the "relevance" characters that aren't as exciting (for a lack of a better word) as wishlist characters twenty years in the making (characters like Bandanna Dee, Ashley, Waluigi, Spring Man, Rex & Pyra, etc.). In the meantime, DLC-tier characters like Ashley maintain their position from the previous game to tide fans over until their eventual promotion. THis is the best-case scenario, and dear Lord, please let it happen!