I'm starting to get the feeling your 4E DMs did you and your group a horrible disservice with the system.
The DMs didn't help, but the system itself was no help initially either. A mediocre to average DM with a mediocre at best ruleset doesn't get very far, and 4E at launch was mediocre at best in a lot of spots. It improved, but not until just before Essentials, when WotC finally settled on a focus and a path to follow, by which time, most people had simply tuned out. It could very well be that 4E has developed enough that a mediocre DM could still run a decent game; the one chance I had at playing a 4E game post Essentials, the game died fairly quickly, so I genuinely don't know. If it has, than creating a clone would be much less of a headache; if it hasn't, creating a clone would be a lot more work.