"More Subscription Content", mainly in seeing content from lesser priority comics not be left behind in favor of translating newer stuff, especially from same comic (like how chapters from Beast 6 are being released when 5 still has some chapters left). Though I almost voted for Site features, since I'd still like to see option for old reader, or at least its index mode brought back.
Translated, high quality official Doujnshi would be sick if that's even possible. Maybe some more merch, like tapestries (Oda Non, etc.). If FAKKU someday becomes as big as Melonbooks with everything in store working together with everyone in the hentai industry, for us overseas fans to get the same amount of stuff as the Japanese, then, FAKKU would be a part of paradise, lol.
More subscription content / benefits. Like having access to read books (without purchase, but not to download) + honoring longtime subscribers with free game, book of choice in x period.
I just like physical stuff, so like a physical version of your games would be cool. Seeing a Manhwa book would be really awesome too like sports girl or Lilith's cord or something.
I would love to see more books from artists such as Mizuryu Kei and Tamagoro. Kei's Sense of Virtue ZERO and Oideyo! Mizuryu Kei Land, and Tamagoro's Fuckbuddy Collection and Thank You Very Bitch in particular would be amazing!!
More anime, especially some newer licenses (Mashou no Nie 3, for example,) but I'd like to see more books that are outside of your usual wheelhouse. You teased being able to get your hands on Drop Out last year, and I'd love that - plus any other Fan no Hitori stuff.
Honestly I kinda wish we had more of all of this. But since we can only vote for one, I chose anime, as there is a distinct lack of legal websites to enjoy licensed, uncensored hentai, especially of newer shows. More physical merchandise would be cool though as it would be awesome to have a shop to buy uncensored hentai products like wall scrolls, artbooks, calendars, daki's, especially with shipping from US instead of JP.
More games would be cool, but we've seen a huge uptick in licenses and releases from other English companies like MangaGamer, so at least games are getting more love now than before. Whereas we don't really have anyone trying to break it big in the hentai streaming biz.