I do agree that most of the rental Pokémon in Stadium 2 had really crappy movesets. The good movesets were used on unevolved Pokémon (Houndour got Flamethrower and Crunch while Houndoom got Ember and Bite). However, there are some Pokémon with good movesets. And, most importantly, there was variety. How can you beat a game using a Prinplup with freaking BubbleBeam and Metal Claw?
All mini-games were good in Stadium 2 (well, Furret's and Golbat's not so much) but come on, Igglybuff's and Cleffa's was very fun. Eevee's was very cool. Pichu's was very fun as well. And what about Scyther's and Pinsir's? (And Scizor's if you had one in your Gold/Silver/Crystal cartridge). About not being able to choose whatever Pokémon for every mini-game, I really can't see how this is possible. It's like wanting to use your Charizard in Donphan's mini-game, or like wanting to use your Quagsire in Pichu's mini-game. Mini-games were based on specific Pokémon with specific abilities, after all.
I agree with you about Hoenn's and Sinnoh's cries. After all, technology had advanced by the time those games came out so the cries didn't sound crappy, but Gen 1's and Gen 2's cries needed to sound realistic. They should have used those realistic sounds from Stadium in PBR, to be honest.
The music in PBR is not bad, it's just "meh". I'd rather have remixes of the classical tunes found in the games at any time of the day (maybe that's just me; I'm very nostalgic). I got the chills when I heard Silver's theme remixed for Lance's battle. Johto's Gym Leader Castle theme is just epic too.
I do compliment the variety of battles there is in PBR. I'll give you that. There are many styles of battling, but then again, that shouldn't be everything there is to a Pokémon game. One can get bored (or frustrated) of battling at one point. When that happens, then what?
And come on! You have to recognize that some of the things they made with that game were just nonsensical. Four people participate in double battles, and the Wii can handle four players at the same time. Hello, Game Freak?! Ring a bell?? Didn't you ever think about letting four people participate in the same battle at the same time like in the handheld games? And what about letting your opponent see your moveset instead of having it hidden like in Stadium 1 and 2? Why does the second player have to wait for the first player to choose their Pokémon in order to choose theirs? Also, the menus. Bland, boring, and the stupid receptionist asks way too many silly questions.
I defend my viewpoint: I think PBR was a very lazily made game and could've been much, much better. I still think it sucks and Stadium 2 was a much richer game in terms of replay value and everything else.