Strike Fighters was released in 2002 - but SF2 is a competely different game in every way - unfortunately you wont understand that unless you ever had the misfortune to play the original SFP1 with Patch 1!!
TKs model allows him limited resources - but it also allows him to keep in business. The people wanting this that and the other normally have no concept of the following:
The limited resources and budget he sticks to - call it low risk but at least hes still there providing support years later. For some reason he doesn't want to gamble, expand his team, and produce the blockbuster everyone want - probably because theres a 90% chance it wont be a blockbuster at all!
How difficult software development is - For a 1 man band forget any major developments - or any fantasy visions of Falcon v6 / Il2 v8 etc blah - its not only the complexity of getting the code working but the time - it took me 2 weeks solid just converting planes to work with SF2!!!
Of course there are plenty of alternatives out there.....ok maybe not - just vapourware or sims from the 90s - so ive taken my pick and know where im well off :)