Make Splitpushing less Viable in Urf
Cause otherwise Shaco and Tryndamere will just ignore everything with their safety, spin/stealth away when the team tries to collapse on them (shaco is a worse offender) then come back immediately when the threat is gone.
Just like make the turrets stronger when there's only 1 champion on them. Still allow it, just make it not make all these supposed to be fun focused games end ASAP.
Can't even teamfight when those splitting champs are on the enemy team cause if you do, you lose 2+ towers by the time you can get there, assuming you win/go even in the fight. Canon makes them go right back to lane even if you do manage to kill them.
There's obviously more than just Shaco and Trynd that does this btw, just listing those that immediately come to mind.