I wonder if we can set the required scores to win a game. I think First-to-5 games would be the standard for this mode.

Mushroom Mix-up -

You stand upon three random colored mushrooms. (The available colors are black, red, yellow, green, pink, blue, and sky blue.) While Toad is standing in the background. He will hold up a flag that designates which colored mushroom you have to go to. If you hit the water a Blooper will quickly pull you off screen.

Maybe have 2v2 on Sandbag Soccer.

*Country voice*Sand Bag Juggle!

Two players are put in a room seperated from each other by a thick wall. They each have to juggle their own sandbag and keep it from touching the ground for as long as they can.
Sounds easy?
Wrong!
Both players are confronted by obstacles as the time progresses. Such as spontaneous winds, invisible sandbags, bo-omb encounters, wild cuckoo attacks, additional gravity, etc.

Maybe have 4v4 with bots/cpu

I have a feeling there could be some sort of "hit falling objects in the air" minigame.

Oh that actually would make a lot of sense! In ssb4 they have trophy rush, maybe ssf2 could develop some sort of currency and it could be ___ Rush (depending on the name of the currency). The currency could be used to bu stickers and alternative moves, but I digress.

I would love to see some sort of all out race to the finish line style mini-game, where the screen would move along to the left and there would be all kind's of obstacles. It would be hard to make but it would be fun.

I speculate me & Jammy (U K B O Y S) to be the best ssFooball2 team, thou we'll likely lose 90% of the time in the Germany MU.

This. I could see some really nice strategies flaring up here.
Also is Sandbag grabbable now?

Judging by the Apex footage, I'd say yes.

I think we can set it higher than 5 but probably not high high. Probably 30 at the most.

I honestly hope for Time Matches in Sandbag Soccer. Real world Soccer works with a time limit so I think it's pretty much a shoe-in feature for this mode.
I think it woulld also prevent Isaac goalies to finish games in very little time.

King of the Hill: The player must stay in a designed area of the stage to gain points until the time runs out.

I speculate Capture the flag. Each player has a different color of flag. The goal is to defend your flag from the opponent from getting and taking it to his spot and take your opponents flag to your very spot. Pretty neat, isn't it?

Rivals of Aether posted an update on there website about a new mode(obviously a April fools joke) about changing the main smash mode into a Tether ball mode. This got me thinking, what if we had Tether ball as a Arena Mode option.

Here's hoe the Rivals of Aether team explained it:
"Rivals are split up into two teams. Don’t worry, you can still 2v2! 4-player tetherball for the win! Each team can only occupy one half of the stage. You can’t cross onto your opponent’s side; that’s a foul! Duh! You use your amazing elemental abilities and powerful attacks to smack the yellow rubber ball. Each time the ball is hit, it takes damage! The more damage it takes, the faster it goes! Be careful though: if you get hit by the ball when it is moving at high speeds, you will be sent flying! That will give your opponent a chance to wrap the ball around the pole, perhaps even more than once. If you wrap the ball up to 5 times, then you score a point and the ball’s damage is reset back to 0. The first team to reach 5 points is the winner!"

I want Tether ball. We could even put are own spin on it, Bomb-omb Ball. Try to score before the Bomb-omb blows up, the one who gets blow up losses a point.

Also, do you guys think we'll get more stages for Sandbag Soccer