I like the OLD Forum from a Follow-up perspective. That is, when I'm not looking for info on a specific subject, I like the OLD Forum because you can easily see what's happening.
However, the NEW Forum is good if I'm interested in just one particular subject at one particular time. In other words, if I'm doing research on pouring concrete footings, it's nice to go to a Forum that's dedicated to concrete (and so on).
So, my 'view' of things is dependent on how I'm using it. BUT, if I had to make a choice, I'd prefer the OLD Forum 80% of the time. (You asked.)