I'm sorry, but this was extremely disappointing
I remember the days when I would be estatic with joy when the Legendary Frog made a new movie. I always got a good chuckle from your movies, but lately I just sit and think, "What happened?!"
Your animation style has hardly improved over time. Animation is art. ART. When someone has no strive to improve in their art, it gets worse as more is made. I noticed this start around when you made One Ring to Rule Them All 3. It's the same old thing. Television does the same thing, but that's 'cause they've made up to a satisfactory level ('cept stuff like South Park, sorry fans of that show). Try experimenting with new styles because that's the only way you're gonna make really good stuff.
The humor is bland. The jokes are stale and overused. Sorry to put it harshly, but the humor sucks. It used to be original jokes, but now it's just the same stuff over and over again. Sure it's funny the first time, and usually the second. Sometimes if you're lucky, the third, but please! In my opinion, it's like the Fairly Odd Parents. They started out great, but now most of their jokes are the same old things over and over. What you should do is try to get out for a while, drop the whole animation thing for a little bit, and live life as much as humanly possible. Then use life experiences to make new material.
Violence isn't a part of most humor, and interactivity could be better, but I have no complaints. It's a movie.
The sound quality is just... blah.
To sum it up, you've run yourself dry and you need to get out and soak up more pretty much. Your loss if you ignore this advice. One less fan.