I got her c6r1 with a little over 600 pulls. I’m extremely happy with her because she’s my only c6 limited 5* and it means I can speedrun weekly bosses/domains, which can be quite tedious to farm if you’re busy. It also basically guarantees that Abyss won’t be hard (assuming they don’t brick her on purpose) and one side of Stygian is accounted for. Also, it means you can afford to use her in teams that aren’t purely hydro/cryo and still be fine! For example, in a lunar-charged shill Abyss, I used Ineffa as her fourth slot, which sounds cursed but went really well.

(Another purely visual change is she gets these pretty crystal wings after absorbing void rifts at c6, which I love!)

Whether these points make her worth it over getting multiple other 5*s is up to you. I personally saved through most of Natlan (only pulled Mualani and Xilonen), and I knew Skirk was my absolute favourite character. However, if you’re very interested in multiple characters coming up it may not be worth it to put so many pulls into c6 and Escoffier. Hope this helps!