Not to offend you or anything, and believe me I want the F/A 18 as much as the next guy, but DCS isn't just a "modern sim." This has been stated here.
WW2 is coming on scene, with the new aircraft and map. I personally believe it is a very good thing. I love dogfighting and that feel of one on one with your adversary. Close in, knife fighting.
Not to go too off topic but I believe WWII will bring a lot of new people to DCS. Some people are very reluctant to learn the A10 , Ka50 or future F18 with its sophisticated avionics. WW2 aircraft are much more approachable from a systems and avionics perspective. Flying them is a whole other thing, but many people seem to be less afraid of that. Besides, sometimes people like challenging flight dynamics rather than challenging avionics
WWII has a huge market, and I believe they can pull in players from IL2 and Warthunder. THen once they understand DCS, they will maybe try a less complicated aircraft like the Sabre and trainers and move up from there. I do believe it will be nice stepping stones, and will help attract new people.
Also I'm a huge rotor head and I personally love the influx of Helos, as there are no other sims that come close to the Dcs Huey and Hip. This has opened up new market potential as well.
I envision DCS in the future to be a home of all generations of aircraft. New maps can be released to work with Vietnam, Korea, Pacific Theater and many other future scenarios.
Not to bash, but just my thoughts