I liked the old form. There's a rule that goes: entia non sunt multiplicanda praeter necessitatem, which is the principle that "entities must not be multiplied beyond necessity".
We already have the scroll wheel, and in the old XMplay, we had a way to quickly move more than either of those allowed by scroll wheel, and that was the single left click on the bar. However, we removed a perfectly good way of browsing the LONG lists, in favor or adding a redundant PageDown functionality through the mouse, which IMHO is okay, had it not been at the expense of removing the only ´single click´ operation for quickly moving through lists. Yes, the leftclick with a rightclick modifier gesture works, but that´s beyond the point. We added something redundant by removing a simply great feature, just to stick with the "feel" of windows scrollbars. I loved the old scrollbar feel and I miss it.
If this had been implemented with an option to restore the same old behavior, or with this "page down" function added to the middle click and left the leftclick behavior intact, I wouldn't be going at lengths to restore it.
I say XMplay is still the best Windows modular music player in the universe. How a scrollbar acts will not change my opinion, but copying the feel of windows just to be like windows is not what people should be thinking of as an improvement.
If you still think what I said does not apply, then you think that clicking two buttons is natural, and I don't (I have lost the count of years that I've been an XMplay user), and I clearly remember that the scrollbar required only one leftclick to take me anywhere in the playlist, not two.