Now that I'm back into playing the game there is one character that I'd really like and expac for and that is Shar. She's one of the more early characters (added 2019) yet once you help her move into the tower things have just stopped with her from there aside from the cloister scenes. I think the training and teasing mechanic to increase her confidence and lewdness is really something especially with how the scenes subetly evolved based on that. The last time she even got mentioned was in a 2023 update and that was just her moving into the tower being one of the conditions for Zhara to move into the wayfort so not even directly about her
I think, with characters like Agnimitra and getting to know Zhara better, adding more to Shar so she could have talks with and about them and would excellent. Also, I just have a think for redheads so I'm a little biased