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DeLux
: In case you forgot, the custom sets were chosen after several months of discussion and feedback from the character boards on these very forums. The first project started in...November or December, I believe, and EVO's announcement that customs would be legal lead to a somewhat-hasty announcement of a second project in January or February. While I agree with you insofar that EVO limiting players to preset builds and only preset builds is unfortunate and doesn't do wonders for diversity, you do have to acknowledge that AA and co. have done everything in their power to try and ensure that the selected presets are the ones that users of each character would want to use in the first place at the time of the project's finalization, short of getting the top players for each character in a room together and labbing them all out exhaustively. (Patches since then have called a few of the sets into question -- Sonic's various Spin Dashes come to mind -- but there is literally no way to account for that sort of thing in advance. EDIT: Likewise, meta advancement/labbing can turn once-loved specials into liabilities, or vice versa. I believe Pac-Man and Duck Hunt are examples.)
As best as I can tell, and do forgive/correct me if this is wrong, your argument boils down to "the moveset project does not allow free selection of all possible permutations of customs, therefore all customs should be banned. (Until such time as free selection of all custom permutations is possible/feasible?)" At the risk of accidentally strawmanning you, this sounds awfully close to "it's not perfect so scrap it entirely." And that is not something I can agree with.
I also want to emphasize that the
ONLY reason EVO is disallowing on-site custom set creation is due to the time pressure such a huge event entails. There is no reason that smaller events should not be able to permit players to make their own sets as they please, given that either a) a fully-unlocked 3DS is on hand to transfer sets (easy with powersaves) or b) the Wii U actually has all customs unlocked (tedious but doable, I did it myself in a month). And such a system would truly allow all permutations of custom moves to be allowed as the players wish, which seems like exactly what you want. At which point all you seem to be arguing against is that nationals like EVO are too big to really allow that and risk players wasting time, which I'm not sure is really fixable without god-tier TO skills.