This sounds a bit beyond the scope of both OXC and OXCE, though I'm not a developer for the main (first) project and I only contribute some code to the extended version (second). If anything, some programmer could take this on as a project and if the code isn't horrendous, and could be proposed to Yankes and Meridian for inclusion in OXCE - the majority of the code is already somewhat there for debug purposes if you mean one player controls X-Com and the other controls the aliens, and it's not over-network play.
