I hope to see a good tarrasque adventure. Because he is a classic challenge to write a good adventure with; it's
never been done and would be an instant classic. I know the current crop of writers at WoTC leaves much to be desired, but surely there is a chance ... a chance ...
What the adventure will
not be:
"The party is travelling through a town when suddenly, the tarrasque (see MM) appears and attacks some commoners! Can you stop him before he eats the town?"
Why won't it be that? Because, obviously, I already wrote that one and I just posted it, right here. So WoTC can't use it or I'll sue

And yup, that's the complete adventure. Sucks, sure. I repeat, this will not be the one WoTC uses.
So, I hope to see a good one!
Failing that, I could use a drow lich to plunder ideas off of for my campaign which is likely going into the underdark.