The Corman version was awful despite being more faithful. You can still have a good movie despite changing aspects from the comics, if the script is great and the acting and execution are also solid.
This whole "Doom the blogger" sounds terrible, but maybe there's more to it. Lets not forget Simon Kinberg wrote the script, he's a fan, he knows he will lose the credibility he gained with DOFP if this movie is crap, same for future SW spin-off director Josh Trank. So who knows, the movie could still be decent despite these changes, Marvel also changed a lot of things for Ant-Man, it doesn't mean is going to suck, we have to wait and see.