Lover of underrated characters
Another pattern they can throw out of the window by doing so (And in the process of giving him three they destroy another pattern).
Ugh, no. If Rowlet didn't exist and Popplio didn't just scream Oshawott 3.0 I wouldn't mind him getting three. But if Mallow is a partner, now is the perfect time to FINALLY let the girl companion own the regional Grass starter.
And I don't want to see Ash's choices for new Pokemon stuck at 2 due to him owning all the starters, reserves would be a big freaking no as it'd just be BW all over again as we all know the starters can't be swapped out.
If we get another Kalos situation in the future where barely any new Pokemon are added and Ash is still around, then maybe I'd be fine with them giving him all three starters again if they actually evolve them all and treat them all equally.