I see a lot of questions and confusion around the different tree types (Online, FTB, GEDCOM etc.) and the general functions you can use.

Why not make an overview with the different tree-types on one axis and the main/major functions in the other axis and then with green (v) and red (x) mark the functions possible. I think that this will help more people get started in the correct way and understand the possibilities and limitations of the different types.