You have to ask yourself, where did we go wrong? When was quality animation and writing sacrificed for humor for toddlers and crude drawings?
ThunderCats Roar is bad. It's really bad. So bad in fact that I had trouble getting through the first minute. The "comedy" boils down to: be as "RANDOM" and "WACKY" as possible. Most shows find a balance between action and humor, but this one just throws everything on the "humor" stack and hopes that it sticks.
The main character, Lion-O, is dumbed down so far that it's amazing he can walk. His lines are pointless and follow the same formula mentioned before, ad nauseam. In fact, there isn't a single character that has an apparent IQ higher than 60, even the main villain is a bumbling fool.
And the jokes just don't work. They just don't. I have a hard time believing anybody above the age of 3 can even call them jokes. It also doesn't help that they repeat them about 5 times in a row, every one of them falling flat on it's face. It also tries really hard to pander to internet-culture with "awesome" and "epic".
The artstyle is awful. That's pretty much all there is to it. This "CalArts Style" has seen use in alot of widely populair series, but the use of it in this one is just an assault on your mind. Proportions differ pretty much every frame, they move like they don't have bones and backgrounds are downright lazy.
I just don't get why this had to be a "Thundercats" show. It could've been its own IP but they decided to take a beloved franchise and completely ruin it. The creator had to guts to say "Its a tribute to all Thundercat fans around the world". HOW IS THIS A TRIBUTE, ALL YOU DO IS RIDICULE EVERY ASPECT OF IT FOR THE SAKE OF ELEMENTARY SCHOOL COMEDY.
Just stay far away from this flaming pile of garbage.