Whether the game offically supports these characters or not, I can still see people creating the original FFs. I think Sega did a good job at catching me off guard with the 3rd character, and while I am not fond of the character copying or having Sonic's moveset, it looks like the custom characters will have gadgets that are more in line with the comics.
From what I can see, it looks like Sega is split in pleasing their fans by keeping the Sonic game characters and abilities, adding dark elements and possible characters and references from the comics, and even pleasing all the DAs who spend their time creating their own Sonic characters.
Before honor comes humility.
The Most High God created this world we live in, and He created man in His image for Himself. Whether we like it or not doesn't change the truth nor does it change the consequences.