Personally, not to offend, but I think fans complaining that they chaged the look of Gerry Harding is kind of silly. I mean, he wasn't even a major character in the film. I can understand if they had a character like Ian Malcom in the game but made him look nothing like Jeff Goldblum then that would be something to cry about. But Gerry Harding... not so much. And it's for the better.
Telltale didn't screw up by changing Gerry Harding, they did the right thing.