Yes, please!
Also, SCALING TOOL! So we could change size of different icons/layers.
As for colours, I have conspiracy theory… that the scarce of colouring options exists to prevent players from replicating banners of REAL WORLD countries!
Even so, creating a different, alternative palette could be done by a dedicated Graphic Designer.
Just allow us to upload a profile pic like in every other sort of social media. Let me put whatever graphic I want in there… wait… yep, I get it. It’s going to be nothing put porn, violence, and racism.
OK, so never mind that.
Yes, please update the tool with more icons, colors, options. There’s too much “knights of the realm” and not enough spaceships, lasers, explosions, abstracts, galaxies, planets, moons, and stars.