After about a week and a half after the update was approved I'm glad to report that v1.1 took care of most of the issues that bugged the game at launch. It seems there are still a few left, most of of them appearing on slightly older devices. Rest assured I'll take care of these problems in the near future.
After the update, the most common feedback has definitely been about the length of the game. I hinted at a new level generation system before, perhaps adding a more Rogue-like replayability to Dwarf Quest (in addition to the current 'storymode' levels).
Of course, it would take considerable effort to develop, so I haven't decided yet. I think I'll go ahead and at the very least design the system on paper, taking into account everything I learned while handcrafting the current levels.
Naturally, any thoughts on the matter are more than welcome and greatly appreciated, thanks!