You can notice in the c2tv ep 4 how when the player kills an alien an get close to the body gathers this substance ("collected 100 nano catalyst"). Which could be the purpose of this material, maybe boost or upgrade the nanosuit to get new modules?
And also, how many modules per suit mode can you have enabled in singleplayer?

Here's a suggestion to the gameplay, i think the nanovision should use a paralel energy bar (just like night vision in C1) instead of svcking your suit energy. Many beta testers may have noticed that it's useless when it gets you "dried".
How many vision modes will be available? because we've seen:
- Thermal vision
- Ultraviolet vision
- night vision (not seen)
I think they've just mixed thermal and night vision in one, resulting the nanovision.

Greetings and post your opinions.

To upgrade your suit I am guessing.