With Cliffs limited plane set I think I'll be playing IL-2 for quite some time yet. It'll be a tall order to even start to compete with the versatility and the full extent that IL-2 can simulator World War II. There are still theaters and operations I'd love to see yet...
But I can see starting to play them side by side and eventually Cliffs of Dover and subsequent addons will supercede the original game. That's what I want to see