Marketo,
You guys provide really great stats on email sends, open rate, click through rate, unsubscribe rate, but we need deeper analytics.
How incredible would it be if you had a "Preview Email w/ Stats" button, which pulled up a preview of the email that was sent. Imagine if you could hover your cursor over any link in the email, and a statistics bubble pops up with how many people clicked that specific link. THEN, if you click the bubble it pulls a smart list of all leads that clicked that link!
My life would be complete with this feature.
btw, I think Eloqua has this feature...
Here is a screenshot of what I am envisioning, please excuse my amature UI/editing skills.