Hey thanks for your kind words buddy , really appreciate that you enjoyed the game!
and yes I kind of added the text displaying banner about upgrade receive but for some buggy reason probably not working , I will surely see to that so thanks for mentioning it.
also your 2nd point is good too I will surely consider it in later development phase of the game.
also 3rd point is good too I will consider that as well.
..those are some great eye catching points, I am thankful for your feedback means a lot.
Have a Nice Day!