I'll have a look at the wavebird...my point was that I hate the 2 analogue stick thing that you have to master on all controllers except the N64 (especially with 1st person games like Halo). To me it's like the classic 'rubbing-tummy-patting-head' gag, just can't seem to get it, but was fine with the c buttons. I like the A stick left hand, and buttons right hand.
Plus I love the trigger position as well. It drives me nuts that you can get adaptors to use other controllers on the GC but not Nintendos own stuff.
*edit* Just looked at the wavebird and same problem as I have with most controllers - if the regular up/down/left/right pad was on the RIGHT instead of the c-stick I'd be away. It's nothing like the 64 controller. Boo.