Even bigger problem, I think, is explosion's damage to other planes. Some planes have that strange feature - you can empty half of your ammo at them and they don't even seem to be scratched, but then, after just one bullet, they explode like a nuke. For example Ki-27 suffers from this so much that while playing excellent Flying Tigers campaign I got destroyed by it exploding in front of my nose much more times than I got shot down. Most of DBW1916 planes have that feature too, and it looks even stranger (since there is really nothing to explode in those wood-and-canvas planes).
On the bright side, in 4.12 if you crash into the ground and explode, some parts (usually tail) remain stuck and maintain shape of aircraft instead of bouncing around. Just a little tweak, but crashes now look a lot more realistic.