I hope Oleg and the boys do a better job on what is considered a "team kill". Someone on my team just blind sided me and, of couse, I got the TK. It also happens a lot on carriers and other small air strips when planes spawn on top of each other. One day I got 3 TKs in a row trying to take off from a carrier (evan after waiting for the deck to clear). I don't mind the TK if some of my rounds miss an enemy plane and hit a frienly, but when its completely out of the pilots control it should NOT be a TK.
Ground collision remain things that need to be "punished", in my opinion. When you collide with sone on ground, and you kill him, it is a TK, even if it's not your fault. If the sim needs to check wether you did want to collide your mate or not, BoB will never be released