Nah, actually, I feel the same way . . . I mean, I was psyched that EEE was such a smash hit that it garnered a renewal/uncancelation, because it was like only the juggernauts got to live beyond four seasons and 52 episodes (a la Dexter and PPG) . . . I remember signing petitions, begging CN to renew Courage for a fifth season, but that never happened, and it's a real shame, because that show was really getting gutsy in its final, and it would have been really interesting to see where it would continue to go from there if it got another season.
But, I digress - I agree that shifting the premise from perpetual summer vacation to throwing the cul-de-sac kids in school was really awkward, and made it seem like a completely different show . . . but, I mean . . . what else could they do? After four seasons of summer vacation antics with Eddy and his lame scams and such, they needed to do some fresh and new things. I guess it's like how Doug Walker felt the need to add sketches and additional castmembers to NC.
You know what's interesting though? After EEE was renewed, and I watched a few of those school episodes, I commented on a fan forum I was a member of at the time how I felt like the new episodes were weak and I got in trouble for it! Because the forum had direct connections with aka CARTOON, and some of the people who worked on the show would occasionally lurk on the forum or mingle with the fans, so my comments were deleted because they didn't want the aka teamsters to see anything that would be disrespectful toward the work they've done.