Crytek let the community know about a pretty neat mod that will be coming soon enough that adds a Slow-Down element to the Nanosuit. Have a listen...
"Our community member
Shajbot is currently developing a flowgraph for a new Slow-Motion Nanosuit Power that will be usable ingame. Imagine Crysis' nanosuit technology mixing with Max Payne's "bullet time" feature. This new power, obviously, will slow down the world around you, much like other similar powers the community has created. However, this one will drain your suit power a lot slower - like Cloak Mode."
Read full story...

More...