Diego,
Almost all of the features you're talking about are already implemented (and working for years) in the Small-Land image.
Yes, I was totally aware that (as Offray pointed out couples of times on this list), and when I was writing "something more playful", I was thinking about that. I should have mentioned that in previous emails. My apology.
In beginner mode, the dockbars can't be removed nor moved nor sized. But in non-beginner mode, the standard halos are available to handle the dock-bars.
More to say: This Small-Land changes are already included in 3.9. I propose to use/expand THIS work instead of create another implementation.
The Sugar-like bar is about "killing" most of features that Doc and even Morphs offers so subclassing from DockingBar wouldn't be so much of advantage. But sure, I'm certain that we'll be copying from and looking at the implementation of DocingBar...
Thank you for pointing it out!
-- Yoshiki