My only issue with your suggestion is this assumes people want facets. As someone who hybrids, thus wanting Stamina/Sta Regen AND Focus/Focus Regen AND not wanting to increase weight because I have a specific set I want, that pretty much rules out like 90% of all facets. So I don’t want them.
Back when Together was being tested I made a pretty big post on my suggestions on how to control crafting, both in terms of what level you get as well as facet control.
Controlled crafting: Basic / Advanced / Focused - Wicked Feedback - No Rest For The Wicked