ok im done, if you want to believe sakurai is some kind of corporate slave who forced into everything then thats your business but two last things
the rock pikmin were meant for alph
http://sourcegaming.info/2015/07/29/plucky-little-guys-olimar-and-alph-in-smash-4/
No they weren't. You're misreading it a lot. The only thing it mentions is they were considered and that Alph was also considered as a character. In no way does it state they were considered as part of the same character. They used Rock Pikmin as an example for why Alph might've been scrapped as an idea, since it was likely that Rock Pikmin were going to be added to Alph at some point during development, despite most likely also being meant for Olimar first. It's like having multiple ideas for a character and moving one of those to a clone that comes up later. That's basically one of many ways to take it. It's 100% vague on how Rock Pikmin were meant for. You're reading the explanation of the character gameplay development, which is purely speculative on their part, using known data to help illustrate a reasonable example. As it was never stated Rock Pikmin were outright meant for Alph, it's possible they wouldn't have even had them created, and Alph would've been an Echo regardless. It's most likely this order, however, seeing as how the Pikmin are a major part of it, with everything in mind;
-Rock Pikmin were considered to add to Pikmin & Olimar
-They considered later on to go with Alph, and Rock Pikmin was also considered to help separate them
-Rock Pikmin required too much development, and Alph does not stand out without another new Pikmin, as the character is still, in context "Pikmin & Alph", so just Alph alone isn't enough to matter.
-Thus, he remained an alt in the end because things weren't workable at that point. This is also when Pikmin was hotter, and by Ultimate's development, Pikmin was no longer in the spotlight, and with little requests, Alph didn't have a chance to be split at that point. Sucks, but it makes sense for them. Go with easier Echoes or those with upcoming games/special 3rd parties first. Just lower priority.
More clearly, the idea Rock Pikmin could be added to Pikmin & Alph was speculation but not confirmed. Or a tl;dr version of the article.
Nobody is calling him a corporate slave. What we are saying is that he didn't personally choose a single character because he takes the suggestions in a row and then figures out if they're workable or not. Just like he's actually pretty clearly said multiple times. Not a single one of them were from some imaginary list either that was made up to suggest he personally picked characters for some weird reason that never matches with any of his statements. Let me make it clear to you what's really happening;
-Nintendo chooses a bunch of characters.
-They suggest one at a time to Sakurai.
-Sakurai talks to them on if they're workable or not, and agrees or denies one.
It was never anything less simple than that. Now, what's clear at best is he doesn't let bias cloud him and as long as they're workable, he'd say yes. In no way has he denied anyone out of some silly bias. He so far(as of the first pass at least) never had to deny someone for moveset issues he found. He could've denied Heihachi for the second pass due to being unable to properly transfer his moveset over in a way he feels works(Min Min is already very wonky to play as, far more than Ryu, Ken, or Terry, so it does show "button per limb" is not easy to balance. Heihachi if he was suggested by Nintendo, would've only been for Pass 2. This is possibly why he
sakurai still needs to ok the character he said so himself
https://twitter.com/Sora_Sakurai/status/1059958604818657282
This doesn't relate anything to bias either. We know that. He's not going to deny a character because he dislikes them either. This doesn't correlate at all to any kind of bias whatsoever. Just cause he needs to OK another character doesn't mean he's even said no to anyone yet. We have zero knowledge of anyone he outright told them no due to legitimate reasons like licensing or gameplay issues, neither of which bias is related to.
Derp, fixed the quotes.