God I love when I try to properly dogfight and my target just "air brakes". I either ram him, or fly by him, or we both stop dead in mid-air, which I'm sure looks REALLY amusing from the ground, but is terribly not-fun in the air.
I can't wait for some momentum physics. The sparrowhawk is especially bad. You can fly them up into the air, point your nose down, then cut your throttle to like 2% and still be able to snipe whatever you want as you fall ever-so-slowly down.
As someone who spends a lot of time in ASFs, and not even for "the win" (because that RAC5 shiva is just too fun to ignore sometimes), I would love to see some inertia implemented. Watch as pilots cut their throttle and go "OH CRAP I'M STILL MOVING WTF"