I think it was a little too early share but since you asked...

Crafting workflows out of notebooks is a really bad idea; an anti-pattern. If you want to go down the road of "workflows for data scientists" look at https://featurebyte.com/

Your messaging indicates you also want to appeal to business intelligence users, with their data exploration needs. In this space I give the crown to https://hex.tech/ How are you going to be different or better?

Also, you should fix your showcase so prospective users don't have to log in. I'll just nope out of your site.

Have you considered going open core? That would make me look more favorably at your product given your lack of indisputable product- and technical superiority.

And last but not least, I wish you success!