After looking at both base kits it kinda seems “unfair” that the regular base kit does get 2 arrow kits, 2 enters and 2 escapes (all the accent caps) while the bone kit only gets one of each.
So logically thinking, the bone kit should either be cheaper or also get 2 of each 
The idea of Bone set is to offer an option of "Carbon" set without orange color. So adding some orange accent keys will kind of sway away from that idea. Netherless i am looking into it but i dont promisse to add some accen keys to Bone base.
Carbon base does offer accent keys in order to give an option to eliminate the orange keys. Say it gives you the option to tune the amount of orange you like.
Those two base sets are also quite different. Bone is bicolor and uses classic color schema. Carbon is tricolor and its using its original color schema (plus its offering accent keys for orange key elimination). Thus they cant be treated equally.
Could you look at pricing from enthusiast POV as well? This set is ground braking in many ways, so a lot of folks will want to buy many, many kits, and it's going to be brutal to wallets.
Here is a random idea: GMK pricing supposedly is better for bigger kits. Is it possible to create "bundle Novelties kit" that include all Novelties, that pushes up each Novelty kit's quantity up and offered at bundle discount? Maybe this is a pipe dream. 
My enthusiastic POV has high limits in terms of pricing (depending on what is offered). I know you probably share with me same views but other people, who are not as enthusiastic, do share different views and their financial limits for this niche hobby are also lower. The challange here is more to get a good balance between value (what is offered) and price. From my POV right now the base kits look perfect without knowing the price.
Regarding the merging all novelties into one big Novelty kit. You are right about bigger sets. Bigger sets have best dollar per key ratio in general. Tho there is also the issue about how many keys you can utilize. For example base kits are huge but they need to be this big in order to give different layouts a coverage. The MOQ is the major factor in that setup and there is no way around it. You cant use all the keys from base kit but most users will definitely use most of them. So base kits do have good price/value ratio and most importantly they are necessary most of the time in order to use other kits.
The Novelties on the other hand are niche and optional. Some people like them, some people dont. If we take warning signs kits for example. Each kit offers colors for Carbon and Bone and depending on how you want to utilize them you pay probably extra. But this is ok because they are optional. IMO they have still good value/price ratio for what they are. However merging these would make that value/price ratio worse if you are using a layout without function row (row 0 in the current kit state). Overall i think the majority will take only specific kits they need.
The kits are designed with the goal to provide best value/price ratio (if purchased logicaly). And there is also the difference between the importance of specific kits. Sure i will not be able to please everyone, there will be still people who has snowflake wishes, but current state of kits is best (considering all facts and limits given) IMHO.
In short: i dont think there will be enough buyers for an Novelty kit bundle.
