I'll vote for any of the IDS versions ( although one with the more enhanced recon features might be fun if there's any room for that to be actually useful ) - I have fond memories of DiD's Tornado sim, and less fond memories of growing up in a low-flying training area being constantly bounced by the things.
Is range really going to be that big a deal with DCS map sizes?
I think most people would fly the F3 & laugh & go back to practically anything else :p ( I mean, some of the systems in the later ones were very good, but the aircraft is a bit of a dog when you have a F-14 ) I suspect it'd work well in a niche & have some enthusiastic supporters in a niche, but probably not as popular as the IDS...
Early IDS TFR would be more use on period-specific games, although how many people are not going to hand-fly it?