Now that we are seeing more hobby articles/threads, army listings and rules discussions, I think the mods should create Topic subfolders for Legion similar to the ones for X-wing, Armada, Imperial Assault, etc.... I think it would make it easier to keep tabs on threads you're interested.

Is it too early to ask for something like this?

Yeah. I think you're right. I imagine they'll start doing that pretty soon. Definitely by the time the game's out.

In my previous experiences you get sub-folders when the game comes out.