With the way video game development is now this was always going to be the case. Years and years and years of continuous improvement and tweaking. I have been doing some of the F-15E as well and honestly not worried about it at all. By the time I get even close to competent with what is already there, this will be a distant memory. If nothing else is added I will still have gotten my money's worth out of it, if more is added then great.