The level of complaining on here is rediculous. The majority of attractions are simple retreads in some way shape or form: To say that Expedition Everest is a new concept and the laugh floor isn't is rediculous. I haven't been on Expedition Everest, but I really look forward to doing so. However, like every other attraction, when it's boiled down to it's simplest form, it's a retread. It's a roller coaster in a mountain... that sounds somewhat familiar - but no they spiced it up with a yeti... that's completely different than the abominable snow man that resides in the matterhorn. But the yeti animatronic is really advanced. So is Stitch.
Try to think these things through logically - Turtle Talk is clearly a kids show, a very good one, and adults can still enjoy it. That being said, it doesn't exactly have a high capacity. I can only assume the laugh floor will have a much larger capacity, and if it's as popular as Mickey's PhilHarmagic than it's a success. It sounds to me like the ride will have quite a bit of re-rideability, probably with a series of cheesy jokes that will undoubtedly be better than the 30 year old jokes on Jungle Cruise.
The only legitimate complaint is that tomorrowland is becoming fantasy land east. I agree, that's a perfectally fair statement, but tomorrowland is where they had room for this attraction, I'm guessing they're saving the 20000 leagues area for a much larger attraction when the time is appropriate. With that said, we haven't heard any "futuristic" ideas out of imagineering or from the members of these boards for a Timekeeper replacement.