I was thinking, maybe mod the grenade so that its explosion flash is really really really bright, say to the magnitude of sunglare. And have it stay on screen for a bit longer.
OR
Make smoke nades reduce your walking speed while you're in them?
If anyone has any info or ideas it'd be greatly appreciated.
The flah bang bit wouldnt be too hard. in the nades tik's would just hafta edit the flash size, color, and time. then just reduce the actual frag damage so they are realistic.
the smoke grenade deal with walking slower would be a bit different. It would (Im pretty sure) require a new coding in the tik for a damage effect. MPowell would probably be able to answer that one better since he knows more about SH than myself.