my opinion on the whole flying and running thing is when there flying they hit obstacles easier so they actually get stuck so you can shoot them much easier because flying is harder to control
last night when i was running with santa i had over 300 hp from leech and people would freeze me and still not be able to kill me and i could just run away right after being unfrozen and this was from night elves who freeze for a long time
you brought up earlier that u changed it to allow it because it was so easy to have it happen but its also easier to stop yourself from doing it
most people never flew by ladders before and if u do hit a ladder all u have to do is hit your ulti and your back to normal
where as now at the beginning of the round everyone runs right to the ladders and than they run to fast for most new people to even hit