You cant say that the skill level has bcom lower overall.
There are more heroes that rely on skillshots and AoE damage,
though AoE spell works different with vector skillshots (ming missles vs KT flamestrike) , but both require more understanding and timing to be fruitful.
Thus, making mages (which have been popular) a bit more difficult to play effectively.
While AA heroes like raynor, valla (also bcoz of her hp boost) n butcher n tychus hav bcom rather easier options to be effective…
In the lower ranks, its wont b much of an issue, as people just throw skillshots hoping they wil hit something…
In higher ranks, its a whole new story, as stutter stepping and juking is more effective now. and the whole gameplay slightly would have changed.
Its still HOTS way of giving some love to raynor, greymane, valla, illidan n butcher