There’s a controller layout from someone with some thousand hours of playtime that imitates a more traditional mouse setup where you move the cursor with the right track pad and then right and left click with the triggers (like you would in desktop mode). I’ve switched to using that and I like it more, even though the official controller layout does a decent job, it gets a bit annoying going through all the combat actions.
I can confirm that syncing through steam cloud works both ways. I also tried remote play while on the same network and I didn’t encounter any issues.
XCOM meets Diablo is a decent enough way of putting it, as long as you don’t expect the mechanics to be 1:1. Since you brought up positioning, there’s no grid for movement, or flanking, for example. Battles are turn-based, like XCOM, but it’s not split in player turn and AI turn, instead, each individual character/npc gets its own turn, with the order decided based on dice rolls and whatever modifiers are applicable.
Got any links to support these claims? I’d be interested to know more for when people bring up the same argument as the person you’re replying to.