Well, after watching original movie some times, making friendship with sharptooth, especially from LITTLEFOOT side, was LAST thing I would think about. yeah...
What I not fully predicted: All dinosaurs would leave great valley after great disaster and find for new home. Well, as we know, they returned back after some time, I thought they wouldn't.
Fun fact: When I first time read all sequels names, I looked at names of LBT3, LBT4, LBT9, LBT10. In my language, they were translated "Searching for water", "Journey to the land of mists", "Journey to the big water", and "The great migration". And guess what: I thought dinosaurs would leave Great Valley in third movie, when all water is gone, then, in next movie, they would find new home, and in ninth-tenth movies they will leave it as well.

I will think about future after I watch Journey of the Brave.