Good job OP on a well thought out thread.
I feel that there's some kind of disconnect between what BioWare artists are designing versus what we know Star Wars looks like.
Hope you don't mind, but I "fixed" that for you.
On a more serious note though, my point is that this is not just about a purely subjective "feeling", it's actually a very specific design and artstyle which in itself is something pretty concrete and distinct. There are rules and measures in design which apply here as well and there is indeed such a thing as an overall "Star Warsy" look. At least enough so for roughly noticing whether something does fit in or not so much. I'm not a full-time designer myself, but I dare say I think many professional designers out there would agree at least to an extent.