Blackjack has done work for various other mods. Wolf you may remember from winning the Planet Half-life mapping contest not so long ago. Me you wont know. The reaction from the mod. Well since we are the mod, I would say the reactions to myself have been like a mirror.
Realism is a tool to use for making the game fun.
If you stick with the rules of real life, you will have some basic elements that should make a mod fun. However, there is a line to draw when you want a good flowing game, with respawning. Note that this will not be like a frantic Half-life Death match experience. More like real life. No slowly bleeding to death, no ripped arteries if you eat too much and no concussion if you bump into a wall.