I add my support to this suggestion! That really would make the RTM gadget even more flexible.

Unless I missed your question that function already exists. The iGoogle RTM Gadget shows "Settings" at the top. The drop down list lets you select which list you want to show as the default or which one you want to look at.

I should have been clearer, I guess. I know one can change lists via Settings. My suggestion was to enable a faster pop-up menu, that did not require a trip to the settings dialog (which is what google reader's gadget does), thus speeding users' ability to hop back and forth among their lists.

I have a lot of smartlists, and retargeting the RTM gadget's view over and over is very click intensive as it is.

I agree this could be useful :) I'm always changing which list I'm looking at.

Why not show all of your lists minimized and include with the list title the number of overdue, due today, and total number of tasks in the list. Then allow you to minimize or maximize each list. It would also remember which are maximized/minimized when you login.

Example:
+ Shopping List -- Overdue: 0, Today: 4, Total: 24
+ Work -- Overdue: 3, Today: 1, Total: 36
- Personal -- Overdue: 0, Today: 1, Total: 1
____Go to Store