Jesse Cox has all sorts of complaints about HotS2, but they're mostly that they haven't really changed it enough from HotS1 to warrant the rebranding. His channel is decent to check out if you want to see some gameplay, his thoughts were like halfway through the last Cooptional Podcast.
Here's a quick transcript from the PC Gamer podcast which I just happened to be listening to rn:
James: I sit between Lucas from GamesRadar, sorta on my right, and Bo is on my left, and Bo, the guy is like doing the Police skin where you've gotta play 10 games to get the D.Va police skin. I asked Bo the week before if he's going to get into HotS because of this and he's like "Naah no way." This week Bo's like "been playing some HotS, I've been playing some HotS" and now him and Lucas are like playing--
Tom: Playing during lunch.
James: Fucking yeah.
James: All day, HotS HotS HotS HotS
Tom: It worked, yeah. They had this scheme of "lets open up the skins, lets make all the cosmetics easier to get, and give you lots of loot boxes", and "lets lure lots of Overwatch players over with this fun D.Va skin"... and it worked.
So yeah, looks like there are hooks that might pull you under if you give it a try. If you don't have much else going on game-wise, perhaps it is a good time.