It may be overpriced, but for what ARMS is, it's amazing. I still love to come back and scrap with a few dedicated ARMS players every so often. Anyways, the number of modes is very much lacking especially in the casual party mode. V-Ball, Targets, Hoops, vs Hedlok, Hedlok Scramble, Regular/Team matches. Replayability gets dry quickly for some of these modes. Story mode has interesting lore for each character, but it's just missions. It could have been expanded upon way better.
On the bright side, there's a fairly deep combat system (that may seem like simply spamming punches most of the time lol), rad character design, glove customization, really good online compared to other Nintendo titles, and more (that I can't think of off the top of my head).
ARMS is a gem that packs a punch.