I had no idea that THQ was in such dire straits. Looking at their Humble portfolio, they have a diverse set of technologies here. It's a real shame that they aren't able to monetize them better. When you look at other publishers, they tend to stick with a single technology, but THQ never had that huge AAA hit that they could keep iterating on cheaply to print money.
CTG Engine, 4A Engine, Essence Engine, GeoMod Engine. There's a lot of technology here. (2 internal) 4A is probably their most advanced.
If I were them, I'd focus on making a CoD clone with the 4A Engine. Perhaps the graphical superiority could appeal to a more hardcore audience that would fill out as GPU technology catches up.