Since we're doing some rather wild speculation on some pics and info that doors open, I'll do some speculaiton too. I'm cautiously optimistic about the update, and happy about this small detail because it confirms a level of complexity that the previous pictures and information released has hinted at.
The aircraft in BoB, and in particular the damage model, are going to be far less generic than they have in the past. Look at the pictures of the Hurricane and Mess models released, the first thing I noticed was that every spar, longeron, and system was depicted and depicted in a different colour. If they are modelling the INTERNALS of the aircraft, it's for a reason... I'm looking forward to hydraulic gear that droop down when the oleo is hit and oil is leaking out, electrical systems that go down when the battery is destroyed etc... and I see the "useless doors that open" as only one aspect of this. So I'm cautiously optimistic as I see this detail as confirming my hopes in this respect.