This ROM hack is
a bit buggy at this point, according to the BUG REPORTS tab (it is being updated mostly anonymously now). And by a bit buggy, I mean that this game should have received far more beta testing than it evidently appears to have received.
(By the way, there are reports that the leaked build was from Dec. 19, 2016, which would conflict with other reports that it was the "TPP Build". In any case, I think this hack should never have been introduced to TwitchPlaysPokemon in such a state.)
Because this ROM hack appears to be nowhere near a final version, it makes it very difficult to consider starting a TAS in the first place.
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I played this hack through the main game and the postgame (20 badges, but not Red). My opinion on this hack is that, although it is clearly ambitious, there were too many technical problems that would not have turned up had adequate testing been done. This is one of the downsides of trying to cram in many new features in a hack. The story was rather forgettable for the most part (though the same could be said about a lot of other hacks) and the postgame feels very empty and visibly incomplete.
There were a few moments where the hack has some interesting ideas that break the mold, but not nearly enough of it to make up for its problems.
