Framerate may be because I'm playing on Wii64, but it's supposed to run at full speed even there. A couple of guys on Metroid 2002's forum have said that it only runs at around 20 FPS even on the actual N64, so I don't think that's just me experiencing problems because of an emulator.
Pacing is just... I don't know. The beginning just seems to move very slowly, which may have something to do with the framerate, but it doesn't feel like the story is going anywhere. I can't put my finger on it, and I'm perfectly willing to admit that it has a lot to do with my personal preference, but it just does not move fast enough for me.
Another cause of ANGST for me is that I've been dealing with a cold lately, which wouldn't be so bad normally, but today I've gained this itch in my nose that makes me feel like I'm constantly about to sneeze, but I never actually do. It's driving me up the wall - especially when it flares up. Makes my eye water and impairs my breathing and everything. :\