I like the design of it, but I think the icons could do with a border. I'm thinking something along the lines of Simcity 4's rounded borders.
I made some mockups from what you provided.
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Hey, I like your designs! Mind if I use them in the game?
I would be delighted if you used them in the game! (Also, sorry for the massive delay...)
Alright! I make sure to add you to the credits in the game when I get to add those designs :)