I totally agree with you on Shota. Let's hope for a great journey!
I don't think Gekogashira's been overhyped honestly, it's been sorta "there", and even most people prefer Luchabull or even Hinoyakoma from what i've read, and most people that want Gekkouga are the kind of fans that go "Satoshi must have all fully evolved Pokémon forever and ever" That's why i'm hopeful for this rivalry, the frog does need to experience some issues that will eventually add several layers to it's personality, which would make him more likeable and memorable overall.
As for my opinion on Satoshi, i'm probably in the same boat as you. I don't care for his in the slightest, as I loathe his character post-AG. But anyway, both Lucha' and Gekogashira are enjoying to watch, and i'm really excited for Noibat, love the species and it looks adorable in the anime from what i've seen. I don't really follow Ash's journey, it's been the same old thing over and over again, don't care if he wins or loses, I'm here for some of his Pokémon and that's it. He and the bird can go away for all I care, just give me the Lucha god, bby Bat and Frog buddy and i'll be fine.
I've read your stance on Clemont several times but not so much on Serena. Do you enjoy her recent improvement/development or did you just lose interest in her?