I don't like the 'flare reveals' idea so much as I'd like a 'flare ignites' bullet style... Anyone remember the tunnels promo vid for HL2? That'd be fun in Soldat, I think. It'd be even better if a fiery soldat could catch other soldaten (pretty sure that's the proper plural) on fire by touching them...
Imagine shooting a flare into a packed trench and watching as a bunch of people catch eathother on fire and burn to death... ^^