Why Olaf is hard to balance.

I read somewhere that Riot intends to make Olaf into a juggernaut but his current kit just won't allow that to happen without him just getting out of hand. So Juggernauts are supposed to have low mobility right? Well Olaf technically doesn't have any mobility but his q is pretty much a long range perma slow. This basically makes Olaf very hard to kite. As long as Olaf has this perma slow it'll be very risky to add power to his kit because it just makes him able to chase anyone down along with being able to fight anyone while also being difficult to kill. Those 3 together don't make for healthy gameplay and one of them has to go if Riot is gonna rework him. Right now Olaf is in a spot where he builds tank and does little damage and gives really mediocre utility to his team or he builds damage and just explodes. As long as he has that perma slow and crowd control immunity, it'll be very hard for Riot to balance him. If we look at old Olaf, he could slow his opponent forever from long range, tanky and hard to kill, while also being able to dish out a lot of damage. Olaf today is either too squishy and dies instantly or tanky and doesn't do damage. Just thought i'd throw out that notice out there in case.