I'm loving the heck out of Arms, a fun and fresh addition to the fighting genre. Nintendo has promised regular updates similar to what they did with Splatoon to keep the game fresh. Whilst new stages and fighters are a given, what other content would you like to see added to Arms. Personally I would like to see more single player content, preferably a survival mode.

Would be cool if we had a more fleshed out Grand Prix mode :(

aside from more characters/arms/stages --

-leaderboards for ranked
-stats that show your win/loss record for each character along with other info like which arms you use the most
-more hedlok type battles for party mode
-more ranks in ranked mode
-harsher punishments for rage-quitting disconnectors
-a tournament mode with more in-depth customization like being able to disable +arms, allowing only default arms or having all arms available regardless of whether or not a player has unlocked them already.
-once all DLC characters are put in, the addition of english VA Biff for the dialogue in Grand Prix mode.

A Story Mode that fleshes out the characters' backstory and the source of their powers

Keijo mode.

A surfer dude with water for arms would instantly become my main.

Also all of this, well except the bolded, that'd screw over Helix players (lol Guardian).

-Lonely_Dolphin