Glad you enjoyed it! Coming from the Board game hobby, I value Solo RPG that is first of all a self contained game before adding any stat check or RPG mechanism as it is the core gameplay loop that keeps players interested. So having more system is welcomed as it is there to keep new comers engaged instead of asking them to use their imagination to drive story forward!
Regarding Factions, I can definitely see the intention ! It is one of the best part of New Vegas but can be tricky to handle! If you are interested, I recommend checking out Mutant Year Zero RPG to see how it manages both base development and faction wars in a gamified way. I think it can be adopted with some simplification and make the faction tension even more flash out!