While I understand why some people aren't fond of the designs, I can't help but feel sad about other shows and games which turned out to be really good but got killed over people disliking the artstyle.
One example I remember really well as It happened when I was young: Transformers Animated.
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Back when the show got announced, everyone despised the idea just because of the designs. The internet was full of Transformers fans mocking any kind of excitement about It by throwing out comments about how dumb the chins and proportions of every character looked and how It would send the franchise to dead even more than the Bay movies.
When It came out, the few people who saw It ended up getting a well written show which took all the best traits of each character from G1, fixed the traits nobody liked of some characters such as Prowl and added their own twists to the Transformers basic structure to stand out on its own through the cleverly written dialogue and characters.
Sadly, It was too late when people found out how good the show actually turned out to be. Views were really low and the toys didn't sell as well, and the entirety of a planned Season 3 which would have expanded the plot even more had to be cancelled, and since then many Transformers fans who used to hate It over the artstyle regretted their choice back then.
Not trying to defend Battletoads specifically as the game could still turn out bad if the Gameplay isn't really good and is a glitch-fest, but I do want to give the Game a fair chance and try It out sometime after It comes out to prevent a possible such as the one the Transformers fandom and many others did with productions such as Animated.
Sorry for the sudden long post, just really wanted to talk It with the chat.