HT fair call on your reasoning for not having extinguishers (though I still think it would add to imersion) But....
How about the dive option... I was in a 234 and puffy ack started a fire in one engine... I Knew it wouldn't work but I dove to over 600MPH to try and put it out... ( the film looks cool an ar234 doing 600+ with a mile long smoke trail )
My point is if you had the ability to out out fires by diving then it would add more choices... for example
Your in 24 with formation, you take a hit on the engine you can
Dive or Bail
If you dive you risk
- Loosing your drones
- Breaking wings
- Crashing into the ground
- Bringing your formation into harms way by lowering you ALT (Yep some of us fly over 25 feet in buff's ppl

)
By having the dive option you add new choices, that need to be made under pressure. Personally I like that idea.
Later All