all you really miss out on is the original campaign.
Actually you don't
All you miss out on is the base game rules
You can play all three campaigns, in TOA (in EU version at least) with TOA rules (by rules I mean additions to the way the game works, with TOA being the most recent at time of posting) and the DA and DL campaigns with DA rules. The only things you can't do are:
-play TOA campaign with non-TOA rules
-play any campaign with base rules
when i bought EU I also bougt the base game, and i hate playing it, because i think toa is so much better (although I don't think DA was much of an improvement as a finished game, still felt a bit empty)
Anyway, so that as they say is that
