Very impressed by the improved moving animation; it makes the game much smoother and easier to control. I wound up buying all of the upgrades and made it to depth level 40.
One issue I did run into one time was the door not spawning in a level. It happened on depth level 20 with the arrangement that has a horizontal band of blocks on the bottom (specifically the variant with groups of 4 gold orbs interspersed). I haven't had this problem on that level before, so I'm not sure what's causing it. Hope this info helps!