Here is what I believe will happen.
You'll be doing, say, Thunderhead Keep.
A counter will appear in your upper left hand screen announcing something like "3764 Red Iris Flowers Sold to Merchants". The number will continue to climb until between 80-120 flowers have been sold.
Then (along about the time you're having to help King Shorty hold the fort down against the Mursaat), the screen will turn dark, the ground will shake, and the announcement "Gwen Walks the Earth" will appear. At which point Gwen will appear and punish you severely for not preventing the Searing. The Mursaat will emit a collective "Eeeek!" and run (okay,
float) like hell, with King Ironhammer bringing up the rear (short legs, dontcha know). Your party will be left all alone with Gwen. Assuming you can defeat her, all party members will earn the...well, I forgot what the title was while coming up with all this, but you all earn it. Also a complimentary six-pack of Spiked Eggnog for having to read this post and then do all that. And Gwen's Ear, which any Necromancer can transform into an Ear Golem.
I can't wait, can you?
Tanith