I thought it would be cool to add the small quirks found in Portal and Portal 2 that are popular for speed runners, and add various smaller details such as instantaneous portals. First one I got down wad portal bumping:
Portal bumping is difficult in the first place, hence why I had to slow it down.
Tweak portal bumping to be slightly easier.
Adjust bumping to not add momentum in direction other than where Mario is going.
Accelerated Back Hopping
Accelerated Forward hopping
Portals "materialize" (AKA animation)
Portals are instantaneously activated rather than waiting for projectile.