I played through the demo last night. A couple thoughts...
- Combat is... okay? It definitely seems to skew towards "cut through hordes of enemies" that modern ARPGs have adopted. Think POE/D3/D4 rather than D2/Titan Quest/Grim Dawn.
- I wasn't a huge fan of the melee classes, but the mage and archer were pretty fun to play as. Both seem to focus on grouping up enemies and using resource or cooldown intensive skills to wipe out the groups.
- The endgame dungeon they let you play through basically seems like a greater rift/pit.
- The demo did not go into the town building mechanics at all.
- The demo also did not go into skills but it looks fairly involved. There is a pet with a skill tree, attributes you can add points to, customizable active skills and what seems like a passive tree. I'm not expecting POE level but it seems more intricate than D4.
I would say I remain cautiously optimistic about the game.