Well, everything else you could reference already before.
What do you have in mind?
The problem I currently have is that I have some submods for OXCF. One of them introduces new soldier types, among other things. These soldiers are supposed to use the same armor types as the regular ones. Right now I have to add armor defintions (i.e. which armors they are allowed to use, and the default armors for some special map/mission types) every time the mod introduces new armors.
If possible i'd prefer to re-use the existing armor definitions, but simply add my soldier type(s) to the list of units - i.e replace
units:
- STR_SOLDIER
with
units:
- STR_SOLDIER
- STR_CUSTOM_SOLDIER
Yes, i can do that manually on every release, but it's not what i'd call elegant. I either have to include all of the original armor definitions and search&replace the entries, or i can sift through the original definations and copy&paste the new ones into my own definition rul. Either way the mod needs to be updated by hand. If i had a way to reference the entries the mod would work work with new releases without having to be updated.
I'm not sure this is even possible using YAML.