Can we build SAAS with bubble?

Yes, I’m working through ways to make Webflow and Bubble look the same when a user switches from one to the other. I I think the way most people are doing it is using a subdomain on webflow to point to the bubble app.
From an architecture standpoint have you used bubble sub-apps to create the multi-tenancy data separation needed for security? Here is a thread on that topic.
Is there anything else you can recommend from an architecture standpoint?
Have you seen any bubble web apps that look even close to as pretty as webflow does?
Cheers, Kurt