After Don Poverimere left the show the team's gotten really weird with the whole Road to episodes. I guess the idea is that you can't just have Stewie and Brian go to random parts of the planet anymore but really first back in time, and now through the multi verse. Not that I have any problem with those (this and "Road To Germany" are still better then "Road To Rupert") but really the only options they prettty much have left are "Road To Space", "Road To Crossovers" or "Road to the Real World" and a couple of those were already done in a quick gag in this ep. And really even more so then any other Family Guy this was just a bunch of quick gags more then anything else. The only real pieces of plot were at the end with the Dog ruling man universe and human brian wanting to come with them but everything else just pretty much screamed "Hey here's a good idea for a gag, let's do it". So of course it all comes down to which of the gags worked and which didn't.
Which Worked: Most of the Highly Advanced World with an attractive meg, AIDS pill and super advance pigs. The Flintstones world (though only for Brian and Stewie's annoyance since FG already did better Flintstones gag), the idea and general tone of the Disney World (there was a part of that I didn't like), the Robot Chicken World (would of been funnier if done with the actual RC esque toys instead of a more claymated look), the real life world, the random guy shouting compliments world, the fake out world, and the quick looks at the fire hydrant and gay world.
What didn't work: The once again pushing in our face symbolism over the highly advanced world, the two headed world, the frozen ice world, the end of the Disney World (Didn't FG already do a "Disney is anti semitic" joke? I mean there are SO many other things you could of already done to convince Brian and Stewie not to say. Like for example Michael Eisner comes in and wants to make everything CG or have sequals to their works and involve the life action teen musicans or something. That would of been funnier then what we got), the badly designed graphic world (I think that was a rip on Internet toons but really could of been done a lot better) and sticking in dog world for the majority of the third act was pretty much a waste. They never explored too much on Brian's feelings on being in such a world and there weren't really any good jokes made from it.
So yeah I'm fairly luke-warm to this ep. I get that it was suppose to be an obvious homage to Quantum Leap but there were a lot better jokes they could of chosen when concerning the entire multiverse. So really more medicore then anything which is kind of sad for a season premiere.