With this update I have (hopefully) eliminated (most of) the biggest headaches players were having with NeoStreak, namely a number of his moves and animation tweaks that were bleeding over to other characters in multiplayer. With V4 the only trait that crosses over to other characters in multiplayer is the halfpipe utilities (which allow characters to run up walls and onto ceilings). It's a global effect so I'm still working on a way to completely fix this, but for the time being if you or your multiplayer partner find it too annoying you can always turn it off by typing "globalhpu off" into the console (without quotation marks).
I'll keep working on it, hopefully the next update will be somewhat final. Have fun and let me know if you run into any problems!