Hello there. Myself Avirup, I am one of you biggest fan. I have some improvement ideas for COC:
1) It would be really useful if walls could be upgraded while all the builders are busy.
2) If two troupes could be upgraded at once then the games be very happy.
3) Like the farming and Barracks, upgrading should also have 2x or 4x speed by using gem.
I would really appreciate if you would concern this idea

