Yes, let's go back to the day where Ash got three starters and all the other Pokemon he had were left to rot aside from PIkachu. WONDERFUL idea. Who needs opportunities for great Pokemon such as Corphish and Torkoal when you can shove MORE STARTERS on him?
Oh sure, you say that Ash would only have TWO starters, but that's one more than I consider safe for the personalities of his other Pokemon. I'd rather see some variety in the species he catches beyond what you find within the starters, thank you. He's bound to get ONE, and that's fine since it won't completely ecclipse his other Pokemon, but more than that is just NO. Okay, so Shinou has a severe draught of Fire-types, but that's still no reason to shove another starter on him. :/