Alright so I'm just gonna admit it, if Splatoon Switch is day 1, then so to will I be buying the Switch day 1! I've always gone on about not getting new systems until well after launch, but that was when I never loved a single game as much as I do now. Splatoon is simply the best game ever, I could literally play it until I die. Got over 1000 hours of playtime in less than a year, had to force myself to stop playing it so I could actually play other games lel.
Naturally I've been playing it again recently, and that's when I realized there's no way in hell I could resist buying a Switch after Splatoon releases on it! If there are droughts, that's fine, I'll keep playing Splatoon. If support is dropped early, that's fine, Splatoon alone makes the system worth it!
Of course, all this is assuming they don't screw up the game, that is always a possibility unfortunately.