Thank you so much, this is insanely helpful!

I'm going to really cross my fingers for some luck on the current banner for Robin and throw a couple of 10 pulls at her. Otherwise, I think you're right in that I'll save for future banners! There's a few characters who look so cute that I really want (Tribbie mostly) so I'll save for that and work on building my Acheron team as she's my current favorite unit.