You aren't giving any evidence except "I like them, so they are not the same as those characters and deserve more."
Look, fact is, they serve the same role as those other characters and they are not getting their own movie like Kronk did. No matter how much you like them (and they are great characters I'd have liked to see more of), YOUR FONDNESS DOES NOT CHANGE A THING. Those characters existed for the purpose of serving Scar, just like the other characters Niña mentioned existed for the purpose of serving the villain in their films. That's what their role was. Potential or no, that's all they got and that's all they are. We can't change that, and it doesn't matter how special they are to you, that is still their role in the film.