Ok here's a random idea for what they could do with the whole "Kion and Rani" situation if we ever get a continuation of TLG in the future.
So a common complaint regarding it is that people think (or other people told them to think) that Rani pretty much wants Kion for the Roar. And even though we know that from a production standpoint, the dialogue reffering to Kion as the Roar was pretty much there to play coy with the romance thing because the show is on Disney Jr, still didn't help. So what if they flip that concept on it's head?
Make it so that as far as both were concerned, Kion being King was purley a diplomatic thing, and that Rani only asked for the Roar to stay at the Tree of Life because (like most teenagers) she wanted to mask her true feelings for him. It re-contextualizes the aforementioned instances of Kion being reffered to as "the Roar" as her just pretty much being in denial and whatnot. Hell they could take it one step further and have it be revealed that Rani never even wanted the Roar at all (maybe she developed a fear from it) and make it so *that* was the lie.
WTF now I'm mad that I didn't think of this when I started writting my season 4