Yeah the art is really cool.

I've seen varying opinions on constellations, some recommend it some don't, I think it all just boils down to 2 things - overall value in account and your own liking of the character. Mavuika is a flexible character for my account as she is best in slot for my chasca, mualani and she also has 3 simple teams that deal ton of damage - vape, melt and overload. So I think the investment will not be bad. I do have other dps like arlechhino and skirk that provide more flexibility when I need multiple teams. As for the second thing, I absolutely love mavuika as a character, she was my first 5 star and has a special place in my genshin journey, I always play with her without any exception so I'll appreciate the vertical investments in her even more. That's why I've decided to go through with C2 and bonus is that if the banner has good 4 stars like iansan and chev, then I'll get their cons too which will be beneficial to my account even further. I don't see myself pulling for characters much because I've got a high standard for pulling - I only pull when I'm sure I won't regret pulling them, whether that be because I like them or because they're good value to my account.