After you blind the NPC it can still do direct moves (trip, dirt, bash, tail attack, whatever) on the group members other than the one who take blows from this NPC.

It's very unrealistic because:
- PC for example can only do combat moves/spells/communes on the one who takes blows from him/her when this PC is blind;
- overall it's very unrealistic since NPC cannot even see nobody other than the one who take blows from him/her.

Suggestions:
1. It's very huge project because you need to set immunities to blind/dirt/eyejab/flash/whatever on all big NPCs in CF.
2. Or just make it impossible and let people explore many areas and kill many mobs. There were many complains from players after NPCs began using combat skills/spells/communers on every group member who stands in the same room. This change could solve that and many other problems and finally let people have best EQ in CF.