A long time coming for a good X-Com remake, after the many failed attempts I almost skipped this one, glad I didn't.
The only issue I have had so far is that the UI could use some tweaking. Sometimes it seems like you get stuck in an action for a soldier and backing out of it requires some less than intuitive steps. Also its annoying that special actions get rearranged for each soldier (based on their setup I guess) such that abilities all soldiers have appear on different short keys (i.e overlook is 2 or most but it gets moved around to 1 or 3 or 5 for others) so you always have to look around or click to get to their abilities. Still though they have done a good job of making most of the UI quick to navigate and not very cumbersome.