Yes that the right name for that - optimization. a lot can be done with lores mesh and higher quality of texture. That mean is need a someone with "lo-poly modeling". im preparing a lot of stuff how to deal with it, but as im wrote earlier, few thing will show in 2-3 months. I get interesant test data and quite simple workflow....
they wrote that all there is in Cryeingine running.... few months of hard work of small group of experienced people.....