Hi, great to hear you like it, it's awesome developing :)
1. Yes it should work, though on some computers the renaming window may pop up behind the Galimulator screen X(
2. Yes a $3 purchase will get you both the game and the right to name an empire. Note that you can give more than $1 tip, every time that happens I swoon like a schoolgirl :P
3. Yes, both are renamable!
And yes there are more features coming up :)