Here are my thoughts on these matters:
1. ThirdWire games are, at their heart, simulations of tactical air power and that is where I plan to keep the NATO Fighters series focused. I also think that in the scenarios presented in the WOE campaigns, both sides would have their strategic forces held in reserve for the inevitable escalation--really, who thinks any such scenarios would not result in the end of the world?
2. Swedish, as well as Spanish, Italian, Greek and other NATO forces are hard to integrate into WOE because the map depicts the North/Central theater while those nations (except Sweden of course) would have been engaged in the Mediterranean. I'm not excluding any nations out of indifference or lack of respect, just trying to keep the campaigns believable. That said, there is a very strong possibility of Danish Drakens in NF3.
3. There is a mod that allows strips of road to be used as bases. I believe it is by JSF_Aggie. I have not tried it, though, and I would only include it if I could be certain that other squadrons would not be inappropriately transferred to those bases during the campaign.
4. AFAIK, there is no Tornado F3. Only the GR1A and IDS that I am aware of.