I like Chicken Little but it's definitely not one of the "greatest" things Disney has ever made. It's pretty average. I personally enjoyed it, but that's just me. Home On The Range though was just plain bad LOL. I would say it is the WORST Disney cartoon and (Disney) animated movie I have ever seen. Although Dreamworks' "Megamind" I thought was so much worse LOL. But I guess that doesn't count because that's not from Disney. Well, probably worst animated movie I've ever seen period (Megamind). Megamind-it had an interesting concept, but the execution-what came out of that was just kind of boring for me. I think I've heard the sequel was even worse though. I heard there's going to be a Shrek reboot. I'm looking forward to that; I just hope it's not terrible and thus ruins my childhood, because I grew up with those movies. I guess we'll see.
By the way I actually saw Atlantis: Milo's Return a few days ago. I didn't think it was horrible but didn't think it was that good either. While I did appreciate that it does a pretty good job not just utilizing the side characters but giving them fun interactions as the weakest part of the first movie for me was that the side characters weren't fleshed out enough, the structure of the different plots feels extremely flimsy and forgettable, aside from maybe the desert section being okay. Those sand coyotes were cool at least.