The goadendag is the 2h version of staff/quarterstaff. Blunt knockdown, decent speed and reach, but bottom of the barrel damage and upkeep.
The poleaxes are top tier weapons, with cost to match. Despite their seemingly superior stats, you don't really see them much more often than any other weapon in battle and siege. They don't need a faster 2h counterpart.
Not really what the topic is about, but the studded warclub backs a little more oomph on side swings than the goadendag does. And it has knockdown and is balanced. Give it a try and yell HOME RUN every time you get a kill.
High tier blunt 2h exist, they are mauls. It's nice that they aren't stubby little clones of the polearms. I like that each weapon class has something unique to offer. You shouldn't "get it all" by investing your wpf into one thing.