The woodpeckers don’t seem impressed but the starlings love it. Darn it.
Update:
Not long after I posted this a female downy woodpecker stopped at that feeder and helped herself to the suet mix from multiple spots on the feeder. She, at least, seemed to like it. I probably just need to give the others more time. Interestingly, once she left, a chickadee who’d been watching her went over and investigated for himself.