The extra modifiers are definitely not well thought out. I don't know why people insist on having partial-R5 layouts and/or partial R4 layouts with GMK sets. These are $120 keysets, it's tough to justify a "kinda fits". Penny wise, pound foolish.
And byker, run the real SoWaRe for GMK.
Honestly I don't think a GMK set without GH hype will get to MOQ in 16 days. If MD were smart they'd start marketing these big MOQ drops (like the alps caps) on the forums prior to dropping.