TSR's Super Smash Bros Thread|SWITCH HYPE TRAIN NOW BOARDING

[Kriven]

It's probably not impossible to think Sakurai and his team will figure out a work-around to include the Ice Climbers later on once the game has been out for a little while and they pretty much have forever to decide how and if they want to include DLC. I'm sure it can be done, but during the primary development schedule for the games figuring out how to get IC to work out probably would have taken too much time away from the rest of the game... that won't be an issue if they start looking at post-launch content.