This mod is what got me interested in SM64 Coop in the first place, the adaptations of the X series' features were a sight to behold, and everything seems to work great!
Except for Goombas. Currently, they are invulnerable to projectiles and the Z-Saber. Worked fine as of just before Zero's release, not sure when this changed exactly.
Other than that small issue, I have yet to see anything particularly wrong.
Keep up the good work, I look forward to seeing this grow!