I've played enough WWI flight sims to know that they don't really hold my interest..
What I WOULD like to see would be a Korean Conflict Era Arena.. That way(among the rides we have now that were used in Korea like the P-51, etc) you could add all those uber piston-prop rides like the F7F, F8F, Hawker Seafury, LA9, etc...
Then add the jets of that era... F80, F86, Mig15... You get the gist... Maybe try to balance everything out somewhat as far as
what is available from that era.. Put a progressive perk cost on all the jets except entry level rides that wouldn't fair much better than piston rides..
Just an idea, and maybe not even a good one...?
Heck, I'd rather them concentrate on what we already have and adding to that than a WWI arena...