I used to like the idea of LBT songs, but around the 6th movie it just got ridiculous, in my opinion. Nowadays I refuse to listen to any LBT song except maybe If We Hold On Together. When I watched the LBT episodes on my computer, I would fastfoward past the songs.
As for the sharpteeth, I did notice they were becoming less threatening. It was around the 6th movie that sharpteeth were started to be portrayed as dumb and not very intelligent, which is quite different than how we see them in earlier movies (such as the LBT 5 sharptooth lifting the rock to expose the kids and jumping over a gorge when the log was knocked down).
I think Redclaw was a general improvement as far as sharpteeth are concerned. He seems to be portrayed with a sense of intelligence that we don't see in other sharpteeth of late movies, in my opinion. I do like Redclaw, although I don't regard him as a villain. Redclaw doesn't seem to have any real motivation apparent in the show other than hunting, which is a basic, sharptooth instinct, not a villainous act. I used to think he was after Ruby and Chomper, but now I'm not so sure; I think the only reason he chases them is because he is hungry, not because he holds any personal grudge against them. Redclaw, far as I know, has no real plot to do anything other than hunt, which is, again, normal for a sharptooth.
I did like the idea of Chomper being in the Great Valley, although they never do explain why he ended up there. I would think that there would have been a lot of opposition and some resentment against Chomper due to the fact he's a sharptooth. Mr. Threehorn himself would definitely not have approved of Chomper living there. I think there was a couple conflicts that occurred in the series as a direct result of Chomper being a sharptooth, but not as much as I would have expected.
As for Ruby, I'm not sure what I think of her. I don't hate her, but she feels more like a background character that was just stuck with the gang with little to no explaination and that we just have to accept she's "one of the gang" now. I don't think I got used to Ruby being a part of the gang. No offense or anything.
From what I've seen, the tinysauruses were actually based on a real dinosaur. They were likely modelled after Mussasaurus, which was a sauropod I believe, or a relative of a sauropod. The problem is, though, that although the Mussasaurus skeleton is tiny (about rat sized, which is about how big the tinysauruses were), this was just a juvenile I think; the fully grown adults would probably have been a decent sized dinosaur, perhaps the size of Hyp's kind.
So while there is some truth to the tinysauruses, it's still inaccurate. I would say that they are all just juveniles that got lost from their parents, but Big Daddy kills this theory, as he is actually an adult, unless he happens to be a child with a very deep voice.