It is and has been 'doable' its merely a question tending to specialise, for MP particularly.
Agreed flight sim tactics and skill are very closely associated with aircraft type - low-level terrain hugging
ingress and bombing in the Tornado is worlds appart from dogfighting a F16.
I wouldnt venture to prescribe specialisng for all, but I speak from my own experience.
Over three years I have mainly stuck with the Seawolf, taking other subs out occasionaly for a 'view from the other side'
The learning process with tactics, sonar, TMA continued/ues.
Three weeks specialising/focusing on the AK has developed skill expotentialy and continues.
If I consider, months from now that I have got ' a pass' with her then I will look at the Kilo.
Now I have the greatest respect and admiration for those divers like Molon Labe who demonstrate their skill
effectively using various sub types. Some soccer pros can play in a variety of positions, but the majority specialise .
Youve got to work with the hand your dealt.