Well polished game with very smooth gameplay. Showing a ghost of how the card would slide is super intuitive. The one thing that did not click for me at the start was that cards have no effect themselves apart from the destinies. I thought I was missing some info of what a card would do when placed. Getting a destiny like: "200 points per empress whenever the emperor is destroyed" gave me the idea that the emperor had some built in way to getting destroyed. It wasn't until later playthroughs that I understood that destroying the emperor should also come from your destinies.
I would have liked some more control over the destinies or cards I draw, because now it is very much RNG dependant on whether you get a good run. All you can do is prevent places where you cannot place a card so you don't lose when a star is placed in a location you cannot reach. The "destiny reroll" was by far my favorite of the destinies obviously ;P
Overall very good game!