After a first quick test drive, I would love to see those in PvP - but as timed events not score-based... It might be more like Mario Cart, but I assume it would be fun.
Unfortunately, the devs did not use the last 8 weeks to fix the exploits (well at least one still exists, I did not test all of them) they introduced with the stun event mode - which is not comprehensible in my opinion!