Frankly mate, I dont appreciate the effort as a lot of this stuff is riddled with bad arguments, bad info and poor examples.
-Jack Frost wasn't the character that was considered by the dataminers, there was another Jack being considered. Jack The Ripper from MGS aka Raiden. Jack Frost only relation to Jack so far is that he is rumored to be part of Joker's moveset.
-If you wanted to use arguments for other characters that can be considered brave, why the hell did you moved from a Bravely default character to ****ing Geno or Sans. The examples you gave with them are ****ing stretches.
-You're giving your own interpretation to info from Tansut. He only said he will not be revealed soon back on December, dunno how long is not soon by Tansut standards.
-You're comparing characters from different companies when explaining why its impossible for Erdrick to have alts by your logic since Pac-Man has one character, one stage, two songs and four spirits. Pac-man apart from the 3 songs he has, there are a lot of Namco music tracks included from classic Namco series in addition to his like Mappy and Galaga. Pac-man also had a 2nd stage that was removed for implementation issues. Both Bayo and Cloud have alts so that doesn't make Erdrick unlikely to have them.
-Leaker-wise you're making your own suppositions facts. Tansut reliability comes from apparently having actual ties with SE as he predicted Cloud, gave the release date of Cloud and also called the Grinch leak a hoax. While his prediction is not guaranteed and you can have doubts about it, rejecting it 100% is premature given that we don't have any reasons to doubt when his track record is going well.
-Can you show me the ballot results that show what is appealing? Probably not, and the only way to go is by the online polls which are frankly unreliable as hell given Sakurai comments regarding how votes were taken and the positioning of characters. Since the reveal of K. Rool, there seems to be a sentiment from the fanbase that the polls are 100% correct. Plus Erdrick is only expected since the leaks.
-One stage is the common from third parties and DLC. The summons from Midgar are still there, and there are no Mii costumes from third parties. Do your research well or don't do it.
-You know very well that pretty much the rest of your argument is pretty much how Geno fits the stats and that how everything is supposed to be an indication that Geno is coming when you should be focusing in the possibility of the character to not be a Erdrick as you're just making a theory based on stretches and references that most likely were planned? (plus I could make an argument that the only reason why there's Geno and Mallow spirits is because they came with Cloud) Also, it doesn't take into consideration that a lot of stats are changed and don't necessarily reflect the characters 100%. Mewtwo is supposed to be heavy in the Pokemon games but here it's quite light, plus Piranha Plant stats were changed from the discovery of its files to release from being the 2nd slowest character to medium speed and that it became heavyweight just when it was released.
-If you're assuming this info was leakbait, wouldn't that make Geno's info a leakbait? This argument is again reaching, plus nobody would have seen Erdrick coming if not for the leakers. Pretty much this just becomes a conspiracy theory, it's even sillier since you end up giving up on this immediately afterwards which makes it pointless.
Finally, I'm leaning on Erdrick as very likely just like pretty much every other Erdrick fan. I doubt most of the fans are putting the 100% on him, and frankly your argument would have been better if it wasn't co-written by a pretty much biased Genofan and you actually done your research or your writing wasn't this poor. Seriously this made me facepalm a couple of times.