his damage was to low for decent clear times or trades in lane, and thx to the low cc time on E he was just very unreliable, especially the ult.
The buffs to the Q damage were certainly needed, he needs some clearspeed or tradeingpower to be relevant outside of support.
The CC buff on E however allowed him to now reliably get off his Q and/r ult as followup which makes his ganks devastateing and his engage rather deadly.
Overall, i think his new kit is just way to hard to balance, it either has his Q+R unreliable, which feels bad, or it's reliable and broken because paireing such powerfull cc with his engagerange is just insane, or his numbers are so low that he ends as a sup and probably even struggles as support outside of maybe competetive as the lack of numbers would cuase the 2v2 to loose despite good cc.
I really don't see what was wrong with the old kit, it was fun to use, strong enough yet balanceable...