One of the good things, is that Team Rocket isn't really trying to be funny.
They have some funny moments, like everybody else, but most of the time, they're trying to make Team Rocket funny, which they're not. It might just be me who think they're boring most of the time, but I'm gonna speak my mind. Team Rocket might be funnier then Brock, but that doesn't say a lot.
And I don't like that Ash has 4 Pokemon before we're even hitting the 10th episode mark, but this is he exactly same position like in Johto and Sinnoh. In Johto, he had Pikachu + Kanto Trio before the 5th episode. In Sinnoh, he had Pikachu, Aipom and Starly before the 5th episode. He caught Turtwig in the next episode. The only region where he had less then half of his team, is Hoenn. He had half in Kanto though.
Even though I hate watching Ash have the same team for many episodes, which is why I hate the pace of the Pokemon Ash captured, it's better for the Pokemon. More time for devolpment on the Pokemon, and less one-minute-capture, like Gible.
But I don't think this will be bad in Isshu. Isshu is in a faster pace, and it doesn't look like Ash and co will be in Isshu for 190+ episodes. I might make assumptations here, but in case of a filler region, he would most like throw one or two Pokemon to Oak, and take somebody else with him. Keeping the show fresh, in the Pokemon department, something I feel Sinnoh felt to do.