SVOD45 & SVOD HD Users:
TAN is taking anime suggestions! Please go to this thread to make your suggestions.
As far as new content goes, you can request anything that finished streaming by the end of 2017. No promises, but they’ll look into what they can do.
They already have the schedules done through October, so the suggestions will be considered for airing after that.
Section23/Sentai licensed-anime only.
(Sorry, FVOD users, but this is all I can get at the present.)