I too find this new format very clunky and hard to use. Like many here, I am a member of a range of forums that are often similar in appearance, less attempt to be graphical than this, but all far more intuitive.
There is way to much space and graphics consuming what little space is available, such that seeing context is difficult.
Clearly designated sub-forums would be an improvment too.
So a big negative from me, definitely a retrograde step from before.