Yeah, something like that. It can bring some nice mechanics to the game.
You are far from Earth, that means everything you want to buy is a LOT more expensive, including rookies. On the other hand you can buy everything up to Laser. With exception of a Skyrangers and Interceptors - you are stuck with either elerium based crafts or ground solar powered tanks that are slow as hell but can operate outside of base for days. Terror missions could be replaced by Dimension rift missions that would incorporate elements from Apocalypse and are crucial for finishing game. Also there could be Psi interference caused by dimensional instability which means that normal Psi-Amps dont work, unless you have alien artifacts that makes it possible. Artifacts which you can't manufacture.
Could be fun.
