I like this idea. I might modify it to no points except for lands bails or ditches over friendly territory, but I could live with it your way also.
But those who say it wouldn't change anything are probably right--unless you perked all the late war planes. I personally wouldn't have a problem with this, at all. N1Ks, p51Ds, etc., etc., all perked (although not very much, about the level of the 152 now). However, that aint gonna happen. No way, no how. Not that I think it would lead to a huge exodus of people, but the powers that be seem to believe that it would, and that's what counts.
I guess when it comes down to a choice between sticks and carrots, much as I derive enormous satisfaction from wielding the big stick on occasion, I think carrots are generally a better idea. So one alternative to this proposal is actually to substantially increase the rewards for landing a mission, since the difference between dying with kills and landing with kills is pretty miniscule at the moment.
I'm sure that suicide dweebs are a real problem for some, but if you fly with a good squad, they're just, well, lunch.
And those who say that picking fights to your advantage is cowardice--well, obviously their advice counts for considerably more than that of every WWII fighter Ace. Galland, Bader. . .all cowards obviously.