Unfortunately, you will never see Project Blue and RPG together in one mod, or RPG with another mod, etc. It will remain as it is.
There are many factors involved when you merge mods together. As mentioned in another thread (Migration thread) about RPG Mod merging with the FPSC source, we have many that have an investment into this mod and enjoy the fact that it is independent. You also have to look at what happens to the mod that gets merged- it usually gets hacked apart to make it work, and who gains control over what commands remain, etc.
Personally, we don't need the extra headaches it will cause, and thus it just will not happen. I apologize for the inconvenience.
- BlackFox

RPG Mod- Create a world full of adventure