The last one was long and painful because of the character mortality. I lost Callandor in Enweil during a large monster battle along with 3-4 other nobles, which made me decide not to rejoin BT for a short while. I'm actually looking forward to another invasion, seeing as with the new estates system we will be able to expand into the blight quickly, if there aren't a huge force of enemies of course. Also, all of the realms on BT are connected at some point to the blight.
Painful, definately. And it did kill interest to lose so many characters and peers.
But as far as "dragging on" goes, third invasion won that contest, imo. It REALLY did drag on for way too long, where the GMs/Devs were irritatingly saying "it's over guys!" while daimon attacks were still taking place.
