The whole jungle/creeps stuff is mechanically a lot more advanced. Pulling to the lane, stacking, double pulling, denying, denying yourself to neutrals, blocking, you just can do a lot more with the creeps, both the lane ones and the jungle ones. Also trees/juking I guess but it's not that prominent, and mid has the height advantage and where denying isn't really tedium but strategy, do you deny to gain a level advantage or do you last hit to gain a gold advantage, since in 1vs1 it's hard to do both unless your hero is way stronger than the enemy.
But yeah some heroes were really fun in lol and it's not like a no skill game, just some roles, champions or phases of the game are a fuckton more one dimensional due to the removal of certain mechanics. The lack of control on the lane equilibrium, closer towers, flash, TP, smokes, laning setups etc create a fairly dull thing to watch, in my opinion. I used to watch a lot of lol back when I played but yeah can't really do it anymore, it's fun when the "game starts", which is when people stop laning, but fuck is the laning phase the most boring shit ever, and it's like that almost every game.
As for this, meh. Maybe I'll check it out but it's like every company saw what lol did with dota, but instead of simplifying dota and making an original game, they instead try to simplify lol, which is a retarded approach. LoL is accessible enough, who are they targetting with a game that's even more accessible? I can totally get the appeal of LoL vs Dota, but it makes no sense to go even further, plus you're fighting against 2monsters already so unless your shit is revolutionary it's not gonna work. But it'll make some money, most likely.