I wouldn't go that far. It is clear that the aliens have been doing some alien/human hybridization work, and that they don't want to destroy Earth's biosphere. If we forget the idea of T'leth from X-Com II then we have to assume that the aliens want to colonize Earth and use the humans, not obliterate them. Furthermore, we've seen that the Aliens do not attempt to kill Earth's leaders, but infiltrate, bribe, or replace them. Read the Alien Mission techs--they talk about the aliens offering to give the humans technology and cease operations in a territory that agrees to work with them.Darth Smiley wrote:I'm pretty sure there's no way to keep the entire game premise, and still keep it balanced, without making one or both sides completely retarded.
It could easily be that not only do they want to avoid obliterating Earth, but they also do not have the capability of doing more than strafing cities and landing 50 or so soldiers at a time--hardly impressive. These are essentially alien commandos as well. The idea is that X-Com operates covertly and the alien menace is kept off the front pages, so this is hardly a full-scale operation.
Also ask yourself, what notification have the nations of Earth had of the alien attacks? I'm not positive, but it wasn't Muton Attack like the intro showed--that was clearly not an actual bit of storyline, because that also assumes X-Com was up and running before. So it seems like the Committee of Funding Nations had been aware of an alien menace for quite some time, had set up X-Com, and kinda left it on the back burner for a while. Possibly the first incursions were Roswell-style easily knocked-down saucers and a few diplomatic liasons asking for the people of Earth to aid them in exchange for advance technology. When this tact failed, they began launching terror attacks, increasing activity, and X-Com woke up to handle it.
So if you make it not an alien empire, but imagine the Cydonians as an alien X-Com organization with steadily-improving clone army and big fleet of UFOs, it becomes more sensible. We never see anything to suggest there's more than a few thousand aliens. The Cydonian force could be like the Rag Tag Fleet of nBSG, with the Hive Mind as their Adama looking for a home after Mars collapsed and they went into deep freeze for a while.