Mario Tennis Aces seems to change A LOT from the last Mario Tennis game, so I wouldn't worry about lack of innovation there. Octopath Traveler also looks very original, so it's probably just a problem with Kirby (and maybe Yoshi, but we still haven't seen much of that).
Well Octopath isn't from Nintendo so yea still kirby that's a shame. Yoshi looks fine its clearly made for kids but it looks fresh atleast. Aces looks great yea but still i think falling at a Kirby game is a damn shame when its like the big title for a 4 month period.