Update: R3 Colour SamplesAfter a long wait, the next round of samples is in! I think Keyreative made massive progress with these, and I'll be happy to move forward with the majority of the colours.
I've contacted Keyreative again, with the following feedback:
Alphas (2085C)
(old top, new bottom)The difference is hard to photograph, but in person the colour is noticeably lighter and less saturated. I think this is a good match for the intended colour.
Modifiers (4126C)
(old left, new right)I previously stated that I was happy with R2's 4126C, but I believe this round's version is even better. It's a little lighter, which matches the renders better.
Main accent (2008C)
(old top, new bottom - note that the cap labelled 2008C is actually 2009C and vice versa)I believe that the cap labelled 2009C (which is actually 2008C) is a really nice match for the intended colour. It looks marzipan in some lighting, and yellow in some others.
Secondary accent (4119C)
(old left, new right)This is the colour I'm most conflicted about. The feedback I provided about R2 was that I felt it was too blue, not purple enough. This revision has fixed that, and it's resulted in a really nice purple.
That said, I'm worried that it's no longer dark enough - the Pantone has a nice "black-ish" quality in some lights (scroll up to the OP to see pictures of my chips). I've requested a darker revision of this colour to see if it's possible to achieve this.
I'm also a little worried that the renders of this colour are lighter and greyer than the real colour is. Ultimately this is my issue, I should have checked the renders against my Pantone chips better.
I'm leaning towards aiming towards matching the Pantone regardless, as I believe the darker colour matches the character inspiration better (Wiz's straps and bat wings), but I'm interested to see what other people think.
In summary, I'm very happy with all of the colours except the secondary accent used solely for arrows. The current revision of this colour is very nice, but I want to see if it's possible to get a better match.
I've also asked about the possibility of getting samples made with the Lich font - hopefully this is possible.
The production is still due to begin once Eternal is completed.