Finish touches on Olaf
has a very nice kit. With the q slow, balanced damage of q and e, and sustain by w, a player with tact can make some nice plays.
Unfortunatly, the only thing that seems to work well for me is a pureife steal build. All tank doesn't give good damage, and all damage is bursted into elohell when you flip R in team fights.
Perhaps a way to balance this would be to add a SMALL amount of bonus lofe steal when ulting. This way, Olaf can still easily be bursted, but has a fighting chance in team fights.
Basically, the player will focus utility to reach the enemy and stick to them.