I never understood the dislike for the GameCube triggers. For me, the triggers are some of the best out there. Of course it always comes down to personal taste, but count me as one who likes the triggers for the GC controller.
Fully agree with the small d-pad, but always found that most games I played that utilized the d-pad used it more for an extra button command, much like the C-buttons on the N64 controller. As for the face buttons, for me they were just like most any other controller - in other words they aren't "unnatural".the small d-pad (Which at least works correctly unlike every MS d-pad design), and the odd face buttons didn't do much for me.
Never been a huge fan of rumble features in games, but for those that do enjoy the feedback this is a major downside.And while the WaveBird was great (And is what converted me into a fan of wireless controllers), those issues were still present in WaveBird form. And of course the WaveBird lacked rumble capabilities which was a issue in the occasional game (Albeit a minor one). And I think lacking a built in rechargable battery is a positive at this point when it has been over half a decade since they last manufactured these things. Age doesn't do rechargeable batteries any good.
I'd rather be able to pop in a new pair of AA's and be good to go for dozens of more hours. So I'd argue that decision was a positive.
Also, I agree with you on the AA batteries over the rechargeable option. I merely meant that with good ol' wired controllers there was no need for a battery source at all. So, with the WaveBird, that was an added cost.