Hi Askhat, thank you for the kind words, and thank you for your patience as well! :)
Regarding custom information for the executable, that is definitely something I want to look into down the road! I'm not sure how simple it will be since that information is pre-compiled into the executable, but I would like to make it an option if I can. As a temporary solution, I think you can use a utility such as Resource Hacker to modify the icon, at least for Windows.
I'll see what I can do around improving the game controller settings. Is there anything specific you are looking for (for example, options like stick sensitivity, etc.)?