Let me address each separate part of this post.
I don't think Ganon deserves his own slot
He is the original villain of the franchise.
He is even arguably more important than Ganondorf. Don't get me wrong Ganondorf shouldn't be cut. He is already an established character in Smash.
and I don't think we should have yet ANOTHER form of an existing Zelda character. Why should we have six Zelda characters when only half of them are ACTUALLY separate characters?
Have you played a Zelda game before? Not trying to sound like an *ss over here, but I just want to know if you ever actually played a Zelda game before.
If you did, you might notice that there are no major characters besides the big 3. The only arguable ones are Impa and (maybe) Tingle (only because he is recurring.
And Tingle is already deconfirmed and will return as an assist.
Impa on the other hand, has a decent chance.
Back to Ganon, besides them, nobody is recurring.
That's why, having transformations and different incarnations of those 3 characters would work as new characters. Instead of just having the big 3, only representing the more realistic games like Twilight Princess, we can have different forms of those characters to represent different branches of the series.
Wait a minute......
HOLY ****!
While typing about how different forms could represent different parts of the series, I realized something that could potentially increase Ganon's chances!
You know how the Zelda timeline splits into 3 at the end of Ocarina of time? Those 3 timelines were the branches I was just talking about.
Let's look at the characters we have so far. The Big 3 all represent the series as a whole by themselves, and each have part of the Triforce.
Link - Courage
Zelda - Wisdom
Ganondorf - Power
What about Shiek and Toon Link?
Each represent one of the timeline splits.
Shiek - The Child Timeline. Shiek (Zelda) had the
wisdom to help Link on his journey.
Toon Link - The Adult Timeline. Toon Link had the
courage to go out on an adventure, with no experience, to save his sister. He also had courage to defeat Ganondorf, because it was his destiny
But there is one timeline left. The Decline Timeline. This is where Ganon ties in.
Ganon - The Decline Timeline. Ganondorf has the
power to defeat Link, and take over Hyrule, in his new monstrous form.
We have the 3 main characters, and a transformation of each, each representing a different part of the series
Perfect representation.
Besides, Ganon is just fine as Ganondorf's Final Smash. Just use the original Ganon instead of Beast Ganon.
Ganondorf has only turned into Beast Ganon, not Pig Ganon.
#notcanon
As I said, Rosalina has a couple of games under her belt, not counting spinoffs. And she represents a whole subseries of the franchise, Super Mario Galaxy. If that didn't cinch it, Super Mario 3D World did.
To be fair, Mario gets a new game like, every year.
Zelda gets a big one maybe every 2 years at best.
So there's more chance for Rosalina to appear than there is for Ghirahim to.