"Traditional Keyboard Contrast" is wrong. Traditional would be F1-F4 and F9-F12 in black, not F5-F8.
So looking at the PMK page, it seems one would need to buy both TKL mod kits and the "Traditional Keyboard Contrast" kit to get a real "traditional" colorway - i.e. black alphas including `~ and \|, F1-F4 and F9-F12, and blue mods. Even if you fixed the "Traditional Keyboard Contrast" kit, it's still an extra kit, that adds an extra cost to something that really should be considered the default. If I can't get "traditional" with two kits, then it's just another reason to pass on the GB altogether, especially when there are other SA kits coming soon, like SA Retro and Penumbra.
In regards to the Ortholinear kit, you may want to consider adding a second 2U shift key, and another 2U R3 blank, as the future Atomic plates/PCB will support 2U left and right shifts and a split 2x2U "spacebar". Maybe offering 1U and 2U blanks (in row 3) would also be a good way to help those wanting to fit out a Planck or Atomic, but aren't keen on the mod profiles... sculpted alphas with row 3 blank mods is a good compromise for them. There's also the slight annoyance that `~ and \| are in mod colour not alpha colour.
FWIW I don't mind paying for keys that I don't use, and I certainly prefer it to playing some lottery with PMK hoping some child deal will tip so I can pay more for exactly what I want. As the kits are structured now, I may consider playing it safe and getting black mods, which I know will tip.