It's working great for me, sorry I haven't reported sooner. My wife has had an appendicitis thing, and then an unrelated car accident (no injuries, just car damage), I fell off of a ladder changing a floodlight (it buckled and collapsed actually), and my oldest daughter is graduating high school this week so I haven't had a lot of time to play lately, but I do have a couple Fires running the most basic of "launcher home pages" and haven't noticed any issues at all.
That's a heck of a stretch you have going there!
How hard would it be to implement a "click" sound on any screen tap?
That's already in there Somewhere in your Fire settings should be an option to Enable Touch Sounds, though Amazon may rename or re-arrange the settings. Mine is under Sounds -> Other Sounds. If that is enabled, the buttons should have a slight sound. Also may want to be sure haptic feedback is enabled in the application's settings under User Interface Options.
Adam