This is my updated review with reference to workspaces and other features:

I appreciate discussion between Koen and AS community to find best use scenearios for FastPages e.g. workspaces, integrations, MRR, future outlook. All of which is very positive experience so far.

I didn't have a chance to explore much in the platform yet, however, noticed that Landing Pages look quite outdated, adding more modern looking templates is a must, sooner better. On contrary, Interactive Funnels is a go, so we can build our experience based on that for now.

Good news, we have a clear upgrade option available in the future when ready.
// "You can upgrade to business plan for 39$ per month." //
'' https://appsumo.com/products/fastpages-io/#q907487 //

Earlier, you did ask about which CRM integration is required for our use, in my case it's HubSpot. For me, this is a basic feature and would help to grow the use of the FastPage and later upgrade to Business Plan once those extra features are available and is of a use to our clients e.g. "interactive popups, custom reporting, ...much more".
It would be great if you could mention CRM possibilities for AS users for existing tiers.

Thanks and all the best.