I know what you mean. I would love to add an Amphibian tank with a bunch of Mud Puppies (Axolotls). They aren't reptile, they are amphibian but it's kind of the same idea.
I think they are so adorable, but the money for these would be outlandish for me to spend.
I'd also like a 120g Discus tank, but my favorite Discus are all in the $200.00 range. So they are a dream that most likely will never be a reality. Unless I get married again, to someone with a lot of spare money. Which is less likely to happen than the Discus tank.