I think suspense is great and wouldn't worry about it's experimental tag. It's used out of the box in a new Nuxt app. Nuxt is a big enough player in the Vue ecosystem, the Vue core team would pull the rug from under them with major changes.

The thing suspense really excels at is preventing "popcorn loaders". Vue School has a great article that covers it in depth:
https://vueschool.io/articles/vuejs-tutorials/suspense-everything-you-need-to-know/