Good to hear that my feedback will help you improve the game. Following you now so I get all the updates ;)
Regarding 2. We also went away a little bit from the theme because we had a nice idea and a cool gameplay idea. This theme is just bad, because the player will get annoyed way too much if you follow the theme too closely. Will not result in a fun game.
Btw. my record was something with 800. Does the game has an end or is it endless?