Comparing the Brawl and SSB4 character/stage roster is a little unfair as Brawl but it can't be helped. Basically, Brawl had everything in terms of what was to be expected minus a few surprise additions/absences. Character wise, we got Wario, Diddy, Sonic, Wolf, Toon Link, Meta Knight, King Dedede, Lucario, and Pit...all characters that speculators back in 06-07 were asking for. We also had the added surprises of Olimar, ROB, Ike, Pokemon Trainer, Zero Suit Samus, and Lucas. As well, most every franchise had at least one new stage with the more important franchises gaining two new stages. I quote Sakurai in that "Brawl's roster is perfect." and I agree with both stages and characters. Game mechanics though was very far from being perfect.
Now, SSB4 has included a new cast of characters that "Yeah, they are they cool" but fail to carry the iconic reputation as those added in Brawl. That is to be expected of course as the pool of characters they can draw from are getting smaller and smaller; with more emphasis being placed on more recent characters rather than iconic characters. By Smash 6, all of the iconic characters will be, more or less, added in into the roster. However, I am sorely disappointed in the stage selection with franchises getting one new stage while some franchises not even getting a new stage. Then in the 3DS version, you have an large amount of Super Mario stages while some franchises, like Metroid or Star Fox, has only one. I am not even talking about a lack of franchise stage representation but just a general lack of stage variety. With the possibility that the only two new unlockable stages being Duck Hunt and Pac Land, it makes me wonder if this is truly deserves the title of the "final product". If you put the two versions together then yes we have tons of new stages but if Sakurai really wants to give us a full rpoduct that makes consumers happy, he should of made it a prerogative to include more new stages. The fact Pokemon has only two stages along with anything besides Super Mario is rather disconcerting.
This won't affect my pre-order but I question what Sakurai was thinking when deciding Smash 4's stage roster. It's very lackluster compared to Brawl. Yeah, the stages are beautiful and very interesting but still lackluster.
sigh....