If you are going to spend a couple thousand dollars on AI war, I think puttin it into UI work (and maybe a skilled UI/usability engineer/designer) would go much, much further than putting it into graphics.
I think that trying to convey to such an engineer what needs to be shown and what the constraints are, plus enough domain knowledge for them to be able to do it, would make the result not great or super expensive. I've worked with such people before, of varying skills, and often their superficial knowledge of the subject matter was really causing bad designs. In every case I was able to take a few of the things they had designed, and then had to just tweak that and use that as a consistent metaphor.
One thing that I keep finding with "UI designers" is that they like designing UI. As in, they like designing multiple UIs for the same game. Every UI is different, and you switch sections and the sections don't work the same and so the users are confused. It's incredibly stupid. Look at some of the AAA games where the menus are pretty but huge amounts of space are taken up by someone's head, and all of the levels of menu work entirely differently from one another. I don't think that is more usable; it's possibly more attractive, but then again they aren't displaying terribly much info.
Usually a usability expert's advice is "show less data." But that's not terribly helpful when you're writing business software where the management needs like 60 columns of data at once, or you're having to show data cubes in various forms, or similar things. And the same holds true here.
In other words, I don't claim to be a great UI designer -- I'm not. I could never work for Apple or whatever. But I do know quite a bit about designing effective UIs for ultra-complicated systems, and I think that most UI designers do not have this skill at all. I think they'd do really poorly with AI War.
THAT said, the opposite is true for something like Valley or whatever. There the data is smaller, and I struggle trying to make something minimalist and attractive. One of those Apple UI designers would run circles around me there. It's all a matter of context, and through my past experience this is what I've observed. I haven't worked with every UI designer in the world or anything, but I have yet to meet one who could effectively handle complexity of this scale.