Personally I prefer if the details were kept to the very last minute, because it just makes the surprise even greater but that's just me! To know that the quantity of offered exclusives is beeing raised to at least 50 this year is great news already and that should be enough for now.
Something I liked about customized figures beeing offered at the previous meets is that it actually communicated the true spirit of the gathering, a Meet for the fans by the fans, no Hasbro directly involved at the beginning. But if the exclusive figures were to be made by Hasbro one day, then I'd say that it was to be expected with the popularity of the Meet that has outgrown itself over the last years.