I believe all active beta testers are listed in the credits, though it is outdated. Though older members are still included, as well as duplicates (such as McMc and Jericho).
I'm wondering if anything general under development could also be placed in Community Support, such as editing move/pokedex descriptions that were too long.
^That might be it. I've never done any beta testing, but I helped in some other sections of development like resizing the 6th Gen sprites and creating some item sprites.
