I personally have a different approach: I suffer too much from the current diversity of available aircraft now, I really don't play DCS like X-plane or FSX, just flying around with different planes for the curiosity..
My main concern is about the consistency in mission making. I started a small PvP campaign in my wing with F-86/Mig-15.... arf, not enough ground units that fit the era, the map objects looks too modern, let's say it is ok for a few missions and dog-fighting above landscape only, but not very satisfying. Currently, we have F-15C/Su-27/Su-33/Mig-29S/Su-25T/A-10C/M2k -and F/A-18C soon- that matches the war environment (map + other units).
If you put a Mig-21B or a F-5E in the air, it is just a joke, and limited to very specific scenarii for pilots who like big challenges. So, most of the time, you have to dedicate missions to these planes.
Well, my first goal is to build +20 pilots missions in "coherent" scenarii to make epic missions altogether in a shared battlefield. And currently, this is done either in the 90's, or during WWII with Normandy. In the middle, you lack about everything.
And if I want to fly a rare beast in realistic environment, FSX and others are doing this better.
Having said that, I get your point, we all are not looking for the same experience with the soft. :)