That's not my thinking. Ryan and Willie could be considered HBF's under such a rationalization. Masten and Kennerley are wingman. If Masten has played as a HBF, it's as a stop-gap, not much more. If WC are to draft a HBF, I'd prefer a dedicated HBF, not a make-shift version.
WC finally came to understand that they should draft actual small-medium forwards to play in such roles, rather than mids playing roles they're not suited or used to. It worked well. I hope that doesn't change for HBF's. No more failed mids being slotted in there, please.
Failed mids?
Like Butler, Sheppard, Duggan, Cole, was hoped Hurn would progress to the midfield.
Is Hodge, Burgoyne and Mitchell failures?
There are some pretty decent backs who used to play midfield when they were younger or didnt quite reach the required fitness levels.