I'll note that I don't mind the Foss ships at all... I like Foss and his ilk for the TTA setting... but I agree they're a poor fit to Traveller as many of us ran it, with Small or medium ship universes. (SSU caps about 5 KTd - IE, max CT Bk2 table entry; MSU caps about 20 to 30 KTd, or basically Star Trek TOS sized or SFB sized... I've thrice come up with between 18 and 20 KTd for the NCC-1701...) Foss' art is all Big Ships... other of his ilk (as seen in the TTA line of books) are definitely Big Ship Universe (where ships tend to cap at 500KTd), but some Foss ships look bigger even than the BSU.
The real standout art is the Elmore pencils in the corebook.
Like Mike, I like the psionics rules, and have since backported them to MT... my MT house rules have become my own custom edition.
I'll also note: My players were appeased by using 3d6+skill+(Stat/3) for fixed TN by difficulty; a search might turn it up i the background, but ISTR using multiples of 5 for the TN...
Then again, we liked the MGT1e playtest task system.