The most underrated album of all time is...

The Left Banke - Walk Away Renee/Pretty Ballerina

It's jammed full of should-be-classic tunes and not even in the AM top 3000.

This will definitely also be in my top 10 of underrated albums. Beautifully arranged baroque pop with some seriously catchy harmonies. It deserves much more appreciation.

Has this become an actual poll yet, or it is still being crafted?

Still crafting. In any case, it won't start until May. That doesn't mean you can't start making your lists in April, of course.