I love Rachel Garrett. I have the Well of Souls from the Lost Era novel series. This just adds to her, and yes she is a badass and this largely unexplored era can still be explored.
Since we only have timelines. I'd love to see at least a mini-series on the ENT-C right before she entered battle. We know her fate, and we know what happened before but to see her in battle and before would be great.
Tricia Helifer? Correct my spelling on her name, she was in Battlestar? I think she'd be a good pick.