We have some decorations, but they aren't anywhere near as nice as what you've posted Obviously the 1st is from X-wing but I'm not familiar with the 2nd.
Also, we're currently restricted by what FSO offers, they'd have to go in a "medal case" style format, and I don't think it'd be easily adapted to be a uniform.
I found the second one by googling "TIE pilot medals". It looks like it's from a Star Wars gaming community called Emperor's Hammer. I guess they have a system where members get a uniform and medals for doing stuff. I don't really know how it works.
But it's certainly a hell of a lot better than what TIE Fighter gave you. TIE Fighter didn't even let you see all your medals at the same time. Funny how that game improved on its predecessor in all the ways that are harder to do (gameplay, briefings, story, situational awareness), but took a step back on the purely cosmetic stuff.
Of course, how did I forget Axem's stuff!!!
Absolutely yes, we could do whatever we like if we script a new medals interface
Wing Commander Saga had a new medal interface. That might be another thing to look at, to see how they did it.