You should create a intermediary speed mode that doesn't unlocks anything from start, just speed up the animations

[Shideravan]

I like the idea of the speed mode, but unlock things is one of the best things in DK64.

Maybe you should create a third option of speed mode.
My suggestion:

Lite Speed Mode

Maintain from Speed mode:
Intro story and level intros skipped (called Story Skip in the vanilla game)
Golden Banana dances skipped
Training barrels completed
All first time text skipped from beginning
File starts in in DK Isles rather than Training Grounds
K. Lumsy cutscenes compressed
All keys behave like 3 and 8
Snide's cutscenes compressed
Shortest contraption animation at all Snide's HQ locations
Single golden banana animation when turning in multiple blueprints
Faster Troff 'n' Scoff feeding

Remove:
All kongs are unlocked from beginning and can immediately be tagged anywhere
All moves, guns, simian slam, shockwave, and camera unlocked from the start