As one who likes it (not a huge amount, but i have no problem with it now and can't see it as being any worse than it was before. Not that it was awful before... oh god... but you know what i mean...) I am wondering why people don't like it...?
I think it's quite a good idea gone way over the top....B&S I think needed the sub categories due to the large number of questions each day, but most of the rest is unnecessary in my opinion.
It will be so easy to miss a subject on a favourite topic (sub) because someone has posted in the wrong sub cat.
Best to just stick on the main Topic and ignore the subs altogether!