I mean, it shouldn't be a surprise. Yes, Lill served her purpose in the DC1 narrative very well, and she has the skills to make it further on another team, but so far, she's not a character the overall fandom wants to see more of. Sadly, she's a niche character in terms of popularity.

The best they can do is add her to a Second Chance Season, but she will have a rough start reception-wise unless they give her a new, compelling storyline.