Okay... I'm doing it, so prepare your face 'cause I'm about to melt it.
Let's slash and dash some bad character choices, shall we?
Toad:
For the love of God. Do you know why you love Toad so much!? Is because you're used to him. I mean, he is EVERYWHERE! And guess what: He's USELESS.
Wanna know why Toad should be cut? Because he is not a character. Never was. Toad is a RACE.
When you see Toad, you don't see that ONE CHARACTER from Mario, you see
A Toad.
You can't even tell if that Toad that appears in the Mario spin-offs is always the same, because they're generic enough so you don't recognize their "singularities".
The only Toad character that is worth mentioning is Toadsworth [no pun intended], and we all know Bowser Jr has better chances than him.
I could go on and on about how supporting Toad is the same as supporting a generic Zora, or a generic Unit from Fire Emblem, but I guess I made my point.
Medusa:
Kid Icarus is fine with only 2 characters. Palutena is OBVIOUSLY a better choice than Medusa. I don't really have to stretch that too much, do I?
Lucario:
I wanted to cut a veteran. Characters from Pokémon are always the easiest choice for a cut.
I'd cut Jiggles, but he/she/it is from SSB64... It's pretty impossible to take her out by now, so...
Sorry Lucario. I really like you, but I had to do it...
[seriously, Lucario is my favorite 4th Gen by far]
Krom:
The guy is far too fresh for a Smash.
Yeah, I know Ike had only one recent game when he got in Brawl, and Roy didn't even HAVE a game in Melee... But Krom is going against both, and both are already veterans, not to mention both appeared in more than one FE... Sooo...
Next time, buddy. Have another game or 2, then we talk.
Slime:
For God's sake, Smash Bros. is a party game, ir isn't a ****in' ORGY GAME.
What I mean is: it's a party, but it isn't THAT MUCH of a party.
Just because it appeared in Mario Sports Mix doesn't mean it's a reasonable choice...