I have all the comics but haven't looked at them in years. Your posts bring back memories on why I got disappointed in them. What started out so brilliantly evolved into a terrible storyline - then the artwork really went downhill. I'm guessing budget cuts forced this. The drawing of Roy Thinnes didn't even look like him anymore... Rod Taylor maybe or even Kirk Douglas... Overall, a better effort than the Gold Key cheapies but morphed into a real letdown.
Honestly, I had few problems with the artwork. Sure, not every character in every panel resembled every actor perfectly. But for the most part I thought they did a really good job. Though each illustrator certainly had his own style - the panels for Book 1 are very different from the panels for Book 2 when Jose Pimentel took over from E. Silas Smith. Though, as much as I like Smith's work, I honestly think Pimentel depicted the characters/actors better than Smith did. And what we saw of Felipe Echevarria, who did Book 3, Issue 1, seemed to have an ethereal style - one that was very fitting for a story that was supposed to focus on Sarah's ghost, and it's a shame we didn't get to see more of it.
The artist whose work might have been least effective was Hector Gomez, who did the covers for all of Book 2 and Book 3, Issue 1.