Oh definitely. I've recently been practicing Lucas in Brawl and I've noticed that while his low cooldown moveset flows together nicely followup-wise, Brawl's hitstun canceling allows for the opponent to be just shy of getting hit and escape for free by airdodging into the ground. Stuff like autocanceled Nair > Fair, sourspot Fair > Uair/Fair, and fastfall Uair > Fair seem to link so well, but alas, Brawl's airdodges are stupidly good.
Even if there is still some lack of hitstun on his moves in Smash 4, the new airdodge landing lag mechanic will make our opponents think twice before leaving themselves open to a deadly PK Love Up-Smash..
Oh, and I can also gather that his grab will definitely be incredibly powerful. In Brawl, he had one of the fastest pummels in the game.. and one of the strongest, doing 3% per headbutt. Now imagine a guaranteed aerial off of a down-throw with Smash 4's increased hitstun. 3 pummels (9%) > down-throw (7%) > Uair (13%) is a clean 29% combo.