>>3794776I'd say 3 big things stand out to me.
The first is that Polka is really adventurous with her content. From her unique and elaborate improv bits during a Duolingo stream to some of her recent projects like Polka Radio and Legend of Polka, he really likes trying out new stuff. It's hard not to be impressed with someone trying so hard to find something new to entertain you.
Second is her voice. Polka's voice is incredibly unique and she's done her reps to expand what it's capable of. She can do tons of unique voices (each of which when paired with the speech patterns she can create on a dime would be good enough to qualify as their own Holo) and her singing is just dripping with feeling.
Lastly, Polka really, really, *really* loves being a Vtuber. She loves the job, she loves idols, she loves her coworkers and she loves her fans. She has so much love in her heart for every aspect of what she does and it radiates in both large and small ways from everything she does. Getting so much of that love for myself by supporting her is a joy.
I love Polka!