Well, I've seen that a number of threads have already been started and then redirected since the forum revision, all to disparate sub forums. I don't see how anybody really likes the idea of sorting through the entire forum directory just to keep track of a single thread they commented in or were following.
Pretty much this, I mean call me lazy but I cannot be bothered to check every sub forum just to get into conversations with the community. Hell the Canonn thread that was a sticky post isn't even accessible from Dangerous Discussion, you have to go over to the Aliens subforum to read it and that's just too much effort... and my browser even with folders already has WAY too many bookmarks.
I've always just used "New Posts" and "Subscribed Threads" - never had any need to know or care about the forum structure, apart from when posting a new thread.*
*Hierarchical forums like this feel 15 years out of date - whatever forum software you move to FD, please make it tag-based (like StackExchange or something).
My eyes, as I look at my phone, thank you. Trying to deal with a forum that doesn’t have a dedicated mobile layout was actually painful...this is so much better.
The mobile theme looks the same as always to me.**
**Again FD, it's 2017 - why is there a separate mobile theme?