Same here pretty much, on everything said there. Well, I'd still get SSB4 because Mewtwo, but... How you are with K. Rool and Ridley now is basically how I was with Ridley and Mewtwo during pre-Brawl, and since neither of them got in (Ridley became Dyna Blade while Mewtwo was cut), I ended up waiting a little while to get Brawl as opposed to buying it day 1. At least it made waiting for Brawl more bearable I guess, but if something like that happens with SSB4 I think I'll still get it ASAP unless Mewtwo (against all odds) were to somehow not be in the game as well along with the two reptiles. Then I'd wait awhile and get the game at my own leisure, to still play a new Smash with friends and all.
But yeah, those who say they won't get the next Smash because ___ didn't get in are usually lying to themselves. I never did that, to my memory.
As for Bowser Jr., it would indeed be a travesty if he got in over both Ridley and K. Rool, but if I end up liking his playstyle or something, I won't keep blaming him for the other two reptiles' absence.
Don't think I can get much fairer than that, if worse comes to worse.