Yeah, EVE's UI style in general is nice. IDK if it would work for this game, though. IMO, the best suggestion anyone came up with for this game is a UI with customizable (and re-style-able) modules, which would let people kind of do what they want with their interface. For the flight HUD, it would actually be even cooler if players could create unique interface setups for their ships using various "modules." For instance a fighter might have a jet fighter-like HUD with only four semi-transparent hotbar slots so as not to obstruct the view of outside, but a large radar window in the corner and a prominent artificial horizon element. By contrast, a large cruiser might have a full compliment of 10 hotbar slots, fully opaque so as to make it less easy to confuse the modules, a nearly-transparent radar window taking up only a small part of the screen since radar isn't required to track typical cruiser targets, and only a faint artificial horizon. Also, a "Custom Text" module would be available, for labeling weapons and UI elements, and any and all variables available for display blocks (such as the current [power], [powerCap], etc.) would be available for use in these text modules as well. These configurations could be linked to blueprints, even for AI faction ships, adding to immersion if someone purposely created a really strange interface for alien or pirate ships.
Likewise, it would be nice to be able to choose from different colors and a few different styles for things like the inventory and nav screen, and be able to scale them and re-order the tabs as I wish. Of course, if I wanted to use a custom texture set, I still could, but more integrated options are always good. That way, for instance, configurations could be saved and used as official faction HUDs without game file modification being necessary.