i would like to suggest you to add 2 functionality : Polar alignment assit for connected scope and Live astrometry + sync mount : i use full android app for control my mount and my Sony A7s via sdcard flashair (on AVEX wewe have also developed ascom driver for sony a7s (for pc of course))
so it would be nice to resync my mount from my picture just captured ^^
see this link (and use google translate) https://www.avex-asso.org/forum/viewtopic.php?f=3&t=5930