When you are customizing a class, look in the information sidebar. It will display all upgrades given to the module as a result of you leveling it. For example, Stealth Enhance II (at least in the demo) removed your shadow.
I think he means leveling up suit modes, am I right? Like you could only get up to level 3 in all 3 modes. Does your energy consumption decrease per level? Can you take more damage in armor mode? Are you able to run faster/jump higher at power level 6 compared to power level 4? If that's what you mean, I'd like to know too. By the way, anyone know what air stomp level 3 does? I was 4 kills away from getting it before they took of the xbox demo. Gutted!
I think he means leveling up suit modes, am I right? Like you could only get up to level 3 in all 3 modes. Does your energy consumption decrease per level? Can you take more damage in armor mode? Are you able to run faster/jump higher at power level 6 compared to power level 4? If that's what you mean, I'd like to know too.
Each module has a separate leveling criteria. For example, Stealth Enhance requires kills within a certain time period after cloaking, while Armor Enhance requires kills while in armor mode.
As for the suit mode increases, I believe they just give you the token to get a new module of that type, that's all.