The good with PoE 2 is you can pretty much make whatever wacky thing you want as long as you can get it to work. In D4 I feel limited by the skill talent system and the limited paragon board options. I also absolutely do not like the current glyph grind at all.
Also liking the boss fights and enemy fights in the zones in PoE 2 more. It sets up very grand exciting level design that feels epic and I think D4 needs to step it up in their boss design and level/dungeon design visually (Zir is cool when he climbs onto the platform for example, but a lot of other fights are kind of meh).
I did enjoy the VoH campaign and the Spiritborn class while playing it fairly casual though. It’s not all bad I just think they need to step it up after this cause PoE 2 is definitely taking the cake here.
The big differentiator though is the ultra hardcore endgame right now that will bring people back. If they open that up more and provide more defensives for players PoE 2 will present a very serious threat to Diablo.