At first I was almost ready to accept this leak, but it's lost my faith as time has gone on. One of the things I always look at with these leaks is how easily they can be disproven. For example, Gematsu was VERY difficult to disprove, since there were no pictures to analyze and they did not claim to know all the characters. As such, no confirmation could ever disprove it, only a de-confirmation.
This leak started out very easy to disprove, which made me want to believe it, since no one in their right mind would spend the obscene amount of hours necessary to make this leak if it could get disproven by one tiny missed detail or a single veteran or newcomer confirmation. However, with recent developments, this leak has lost that believability. The roster has been stated not to be final, so a newcomer not predicted by this screen is not evidence against the leak. Further, whenever an error is spotted in the leak, someone claims that they altered the leak pictures in defense of the meta leaker. This could theoretically be true, but the excuse basically makes the leak impossible to disprove by spotting errors. There's really no way to kill this thing, except Sakurai revealing a veteran with a different model. Even then, a leaker suggested that Sakurai might change the models to avoid the leak (not gonna happen), which would officially make this leak immortal. All in all, I'd like people to use caution and some skepticism when dealing with leaks like this, since they are cleverly designed to be able to stand up to scrutiny. I would absolutely love for this leak to be true (the roster is phenomenal imo), and this is not evidence against the leak, per se, just a warning to stay wary.