Hi,

Based on the feedback here, alongside my personal preferences, I've decided to return double column XT coverage to the Art Deco novelty kit.

Here's a very quick mock-up of the envisioned Art Deco novelty kit (v3):


I'm leaning towards keeping the Art Deco novelty kit more expansive (and consequently more expensive) as I can potentially justify the cost for the molds with another future keycap project where I can re-use those novelties in another colourway.
Furthermore, the double macro column is not just XT layouts, but also for more non-standard/niche layouts that use 1u modifiers (i.e. ortho), which GMK sets typically struggle to cover.

For Casino Royale, I've decided to return the Joker hat as a gold accent, alongside the 2u backspace novelty.
However I'm still ambivalent about the inclusion of the backspace novelty.
The simple matter is that the backspace a less common position for novelties, so it's low priority.
Furthermore, there was mixed feedback about the sword graphic style not meshing with the suits, so I'd like to seek feedback on changing it instead to the 4 cards of suits (the previous old black Enter novelty):

Casino Royale Kit (v3):


However if the Casino Royale kit costs a bit too much, I'll be looking to culling the backspace and/or joker hat again.

For Add-ons kit (v3):


I've added Stepped Ctrl back. Just felt like it was more unique key that those with similar refined tastes would actually get the add-on kit would appreciate it.
Sorry, I've elected against putting Mac Command keys into the kit at this stage. The base kit's R4 modifier legends are all text, so although I prefer the icon '⌘', the text 'Command' is more consistent, however this seems somewhat redundant due to the 1.5u 'System' keys included in it for HHKB coverage.
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The kits have been submitted to GMK for quotes today so hopefully the vendor and I can get a better idea of what the set pricing will look like.
To be clear, the current kitting composition of kits are my decision and not the vendors. I'm just trying to balance the initial idealistic vision I had, versus the pragmatic reality of the current market. I'm sorry if my previous or potential future compromises for kitting disappoint your expectations for this project.