Lots of things are possible yes,  But currently it's not exposed. It shouldn't be that hard a patch, but it's C++. For skyboxes possibly too .

(If you haven't already) the best thing you can do is try it and draw your own conclusions.

I don't think anyone wants something like that. There has to be a separation on what is mechanical and what is (too) automatic. Basically, I'd say that if there's only one simple way to do something, then that's mechanical, and if you need a tool that solves more complex issues and/or makes choices, that's automatic. That's why I like auto-queue in vanilla, there's only one simple way to "keep producing these units from this building". That's why I don't like auto-scout, there are many ways to do it, and auto-target is much worse, the point of a FPS should be to aim first. Now, maybe many things in ModernGUI are hard to classify, and then it's a matter of consensus on what would be mechanically boring for most people, and with most people it has to be taken into account that most people here are not necessarily representative of most people overall.

Mmm estoy seguro que la primera son los grandes lagos, y la de abajo es los Andes.

I care about how neat it looks like for someone just starting the game, considering how those panels look like in other games. So a mod wouldn't do