Nah. I think it works pretty fairly now. I see only a minimum of kill stealing and if you put a few bullets into a guy before someone else gets them then you still get a little credit and get to find out who it was.
With most of my kills at least I either have a great shot at d300 or under and get him right away, or I'm on his six for a long time and he's either out running me or out turning me. I'd say 90% of the time someone swoops in and blows the con away I appreciate the help. I've found that ah players are very good about not going after a con that is totally dead just to get the kill, and likewise if I'm chasing a con and see that he just took critical damage I break off immediately. Anything less would just be a waste of ammo.
Basically my point is that the times people get the kill I'm chasing are ususally one of the following situations: Intercepting a bomber ib to friendly targets, surpressing enemy aircraft over a field for capture, and in a furball when there's usually 2 or 3 guys lining up a shot on my 6 anyway. All of these times I appreciate any help I get and don't mind a bit if I only get an assist.
Really, its pretty fair right now, and the system encourages a very minimum amount of dweebery compared to others proposed in this thread.
-sequence