1970s Counter-Earth even had its own letters page in The Power of... Warlock.  It's a shame that the comic companies nowadays rarely reprint letters in trades and collections as the early Warlock letters are everything you'd expect from a 70s silver age comic: a mix of sycophantic adoration of the title, its creators and characters or weirdly serious theological complaints. It's an age when comics as spelled with an X. Knowing Marvel's predilection for writing letters in-house, I wouldn't be surprised if the earnest religious correspondence was created in an attempt to stir up a controversy to drive up sales.

Many letters from the first run (only 8 bi-monthly issues) of The Power of... Warlock gush strong praise for the title, such as Steven Oelrich's from Colorado Springs (and, as much as I'm enjoying Warlock, I wouldn't say that the first run was as momentous as he suggests):


A Cleveland correspondent, Walter Loepp, saw Warlock as entertaining - though not full of childish gimmicks and devices - plus satisfying intellectual cravings:


Many letters dealt with the religious aspects of the comic, feeling that Marvel had "gone too far" in presenting the High Evolutionary, the character who creates Counter-Earth in a matter of hours, as a quasi-deity and having Warlock cast into the Christ-like role of a saviour:



Keeping the "Warlock world" separate from the rest of the Marvel Universe may have been part of the ever-present debate at Marvel around this time about whether or not to re-boot the characters. Having a world without super-heroes would enable a who series of origin stories and re-tellings (much in the way the Ultimate series has done recently).

In issue 8, readers would have found this notice:


Without sales figures it's hard to say how popular or successful The Power of... Warlock actually was. From today's perspective it was clear "what went wrong": the initial issues had formulaic, dull stories involving silly animal men. Friedrich's plots made the comic more engaging (certainly when Dr Doom and The Brute were introduced) but I guess it was too late by then. Something did change, though....