But do you seriously think that HD is a *better* measure than CR? I agree that CR has problems sometimes, but HD is just way off. Just to grab the SRD's "D" page and zip around:
Pit Fiend (13 HD, 16 CR)
vs.
Delver (15 HD, 9 CR)
Whoo'd win? [grin]
Tell ya what, I'll advance the Delver to 26HD to make it a clean double of the Pit Fiend. You take the Delver, I'll take the Pit Fiend...
John