I think the forum is a nice complementary addition to the facebook group.
It will allow for people to ask questions specific to the model of the printer they have, find printer specific upgrades easily, and searchable.
I've had my Acrylic Prusa i3 from FT since Spring of 2015. Just a few months before the release of the 2020 Prusa i3. I was able to get it up and running with help from the FT support email and various 3d groups. I didn't start upgrading really until the FT facebook group opened when I saw people posting things they used specifically on the model I had.
I am by no means any kind of expert but if I am able to help anyone I will be more then happy to and whatever I don't know I will help research.