What type of bank should I make next?

LilyoftheValley

Your local flower girl
Defender of Defoko
I'll be getting a new mic (blue yeti) soon and I want to make a new bank. I have so many ideas but I'm not sure what kind of voicebank to make next. Should it be an update to my UTAU Mi Minami or should it be a new character?
How can I improve my recording? Should I do anything differently? (I am open to critique :D I want to get better)
What kind of voice should it be? (ex. soft) Mono-pitch, bi-pitch or tri-pitch? What pitches would you recommend?
Examples of Mi's current banks:



(please let me know how to improve on my kire)

I want it to be VCV but I could make a CVVC (I have no idea how to use CVVC though)
 

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