There's nothing special about Palpitoad, at least in my opinion.
I don't think Ash's outfit needed to change. Nothing was wrong with the old one to me.
Sewaddle (not Swadloon or Leavanny) is Ash's best BW Pokemon.
Cilan is not that great, he's basically Ruby (from Pokemon Adventures), but more flanderized. Tracey, and even AG/DP Brock > him. He's not awful, though, just not my cup of tea.
May is not the best female companion, though I can see why others would think so.
Infernape and Dawn are a bit whiny, though I suppose they're not the whiniest ones of all time.
I don't like the idea of "fresh start" (by that, I mean Ash oaking all his other Pokemon). I just find it weird that he assembles a team, and then dumps them at the end of a region. It might not bother me as much, if he didn't get attacked by Team Rocket (even after that, he doesn't learn). I hope he doesn't do the same for XY.
Not so much unpopular in other sites, but it is here: OS > All. Other sagas are just as good, just not in my opinion.
Although I like Ash's old traveling companions, bringing them back will not automatically make this show good (though it would be awesome!). This show has more (and bigger) things to get out of the way first..
Paul is NOT a good rival, he's way too one-dimensional and poorly handled. He's a good trainer, though, so that more than makes up for it (not to me, personally, but to others).
Paul vs Ash (6-2) was worse than Cameron vs Ash (5-6), circumstances aside. Both of them were epic, though!
Female companions: Misty > Iris = BW2 Dawn > DP Dawn > May
Male companions: OS Brock > Tracey > AG/DP Brock > Cilan