dixe kong & shadow 2 of the most wanted & easy to add echos wheren't in the game as playable
No one knew about echos during the ballot so it's not like they got votes to be echos, so this has nothing to do with the ballot. Not to mention Shadow is 3rd party so there very well could be other factors limiting his getting in and most Dixie fans seem pretty sure she should not be an "easy" echo and that she needs to have several changes to be correct to Dixie.
the belmonts didn't get THAT many votes based on world wide polling yet are playable
Castlevania is a series much like Fire Emblem where the main character changes frequently and so likely while Simon didn't reach the top the series as a whole did quite well. And even if they weren't the first place picks considering how much they were able to get from the series I'm guessing the fact that Konami was super easy to work with and was a contributing factor to their inclusion. So the ballot probably helped get the ball rolling but I'd guess they got in for several factors after that.
Issac & Geno & bandana dee 3 very popular characters snubed
And all have reasons they likely didn't make the cut. Isaac is from a very old series that doesn't have any current games out, Geno is from a super old game and is 3rd party, and Bandana Waddle Dee probably isn't as popular as K Rool, Ridley, or Inkling were.
Waluigi not only snubed AGAIN ! but was shown off in a direct that you can KILL assist trophys YET a freaking piranha plant was made playable ! near NO one asked for or voted for him !
Waluigi has never been in a main line game and again isn't near as popular as K Rool, Ridley, and Inkling. And Piranha Plant is in because Sakurai likes the roster to have a few odd balls to help keep the roster from feeling like its all just heroes, it's his roster diversity pick and likely only had to beat out characters in the same vein as WFT, ROB, and Mr G&W. Waluigi was never going to be considered for that slot.
joker & incinaroar came out after the ballot was even done (fans where asking for decidueye & septile)
And they have different reasons for getting in. Joker comes from a fairly popular game made by Atlus who have a great working relationship with Nintendo, even making a crossover game between Fire Emblem and SMT. Not to mention it seems pretty likely we're getting Persona 5 on Switch and Joker was selected to help promote that. Incineroar beat out the other Pokemon because he had a personality Sakurai liked and allowed him to make a pro-wrestler moveset he wanted to do.
bayo cheated the ballot & was in smash 4 data B4 the ballot
That one is probably a mix of PR and ballot, I have no doubt she was doing well and probably did score high so when they were already working on her they just said it came from the ballot.
its all just PR speak & lies the only character who really was a ballot pick was King Krool & for some reason the belmonts (even ridley was tryed to add to smash 4 but was considered to big at the time)
Of course it's PR speak but that doesn't make it lies. They never said they were going to just pick the top 5 ballot picks, it was always meant to be a suggestion box and nothing more. And the fact that from it we have Cloud, Bayonetta, Simon, K. Rool, Ridley, Inklings, Isabelle, and all the vets back can most likely all be tied back to the ballot. To suggest it hasn't been used at all is just silly.