What do you think makes a good SaaS product experience?

A responsive team who is eager for feedback. Also when your feedback is considered for improvement on an product

It's pretty much impossible at scale but a 1on1 onboarding system

UX is usually what makes or breaks your chances of converting a news user within seconds of signing up.

IMO User-friendly interface, to have a clear value proposition (even if it changes to have it clear always) and regular updates or improvements been done

A good Saas product experience is something that is as close as possible to well-designed consumer apps. Unfortunately, very few people working on SaaS products understand this resulting in extremely complex UX and bad visual design. It has gotten a lot better in recent years, as more consumer designers have entered the field, but still has a very long way to go. I understand that SaaS products are inherently more complex than consumer apps (due to the complex nature of some niche industries) but if your product requires an intensive month-long course to onboard either customers or your own employees it means your UI is extremely confusing.

Onboarding system and supportive team that values you as their customer.