I've only used the 5 main characters, but then there's these new character introduced in v2.0 and since they have some really convenient abilities, I could maybe save 2 minutes and maybe more. So what do you people think, should all characters be allowed or should only the main ones be allowed? Also, the rules says beat Invasion 2 with every character you want so...

I say no only because they are getting a re-write by beta-4. The bug with switching playables on the world map is only in SMBX 2 Beta 3 as well. I think the only way to allow it is to have a version number on the leader board and I have not found out how to do that.

2.0 is still in beta so i say it should be held off

I don't have problems with it being held off, but I think you should be allowed to take advantage of it. Beta 3 might not be complete, but The Invasion 2 is. It's not the same thing as cheat codes and you're already using some of the power-up state bugs in runs. I really think that it shouldn't be banned only because it's a beta, I mean, it's only the engine that is broken.
Also, it's a bug and bugs are often used in many speedruns, unless it's a glitchless category. I would like to hear what ToRRent think as well.

My reason behind holding off is that when the version of the engine is public that has the bug fixxed, then how will you handle it? My idea is to have the version of SMBX used on the leaderboard as a column, but I have no idea how to do that.

Do you mean a subcategory? That's not hard to fix, I know how to do it...
...but I don't think it's good to have that many categories, maybe we should allow only Mario, Luigi, Toad, Peach and Link after all. That way we shouldn't have any issues to discuss. But on the other side, we don't need to defer to other versions and therefore using special characters would not be cheating.
So, witch version should one use? Well, the answer of the question is simple. All of them.

I also agree that all versions should be allowed. Just we need to be able distinguish between them. not by subcategories either.

Should all characters be allowed?

MECHDRAGON777

CopyLeft

Super Mario Bros. X

-The Invasion 2 - 03-05 Painful Playland - by Redigit

-The Invasion 2 - 04-01 Flying Raccoon Zone - by Redigit

-The Invasion 2 - 04-05 Dungeon of Inappropriate Phrases - by Redigit

-The Invasion 2 - 06-01 The Rawest Forest - by Redigit

Chanceux

Any%

All Stars%

100%

Goal

Star

Mario

Luigi

Toad

Peach

Link

Secret Exit

SMB3 Roulette

Star Exit

Ice Star

Mixed

Wario

All Levels

Full Game - The Invasion 2

Level Exit - The Invasion 2 - 1-4 Floating Brick Niche

Character

Level Exit - The Invasion 2 - 1-3 Misplaced Pipehammer Maze

Level Exit - The Invasion 2 - Ice-1 White Savage Zone

Level Exit - The Invasion 2 - Ice-2 Frigid Awesome Land

Level Exit - The Invasion 2 - 2-1 Subcon Nightmare Land

Level Exit - The Invasion 2 - 2-2 Megaton Vase Hole

Level Exit - The Invasion 2 - 2-3 Field of Shotgun Vases

Level Exit - The Invasion 2 - 2-A Brick Hole Massacre

Level Exit - The Invasion 2 - 3-4 Switch Action Zone

Level Exit - The Invasion 2 - 3-5 Painful Playland

Level Exit - The Invasion 2 - 5-2 Desert Maze

Level Exit - The Invasion 2 - 5-3 Pyramid of Fail

Level Exit - The Invasion 2 - 6-3 Underground Battle Arena

Level Exit - The Invasion 2 - 6-1 The Rawest Forest

Level Exit - The Invasion 2 - 6-2 The Lost Woods

Level Exit - The Invasion 2 - 4-4 Retroville

Level Exit - The Invasion 2 - 4-7 Pwnhammer Deuce

Level Exit - The Invasion 2 - 7-4 Dire Dire Rocks

Level Exit - The Invasion 2 - 4-1 Flying Raccoon Zone

Level Exit - The Invasion 2 - 4-6 A Short Level

Level Exit - The Princess Cliche - 1-1 Mushroom Plains

Level Exit - The Princess Cliche - 1-2 Fungi Hills

Level Exit - The Princess Cliche - 2-2 Frosty Frostland

Full Game - The Princess Cliché

Mario Fan Games

Looking for new mods

Global Rules

Regarding other episodes

IMPORTANT ANNOUNCEMENT TheXTech 1.3.6.1+: Changes and impacts for the SMBX Speedrunning Community