BUG: can't draft upper-left or upper-right corner of groupy-tab region

I love Groupy, it's awesome.

However, I have two problems with it that come up pretty frequently..

1) when a groupy tab is on a window, I can't drag-resize the window  from the upper-left or upper-right corner .. (which is now the groupy tab region)

I can drag-resize from the top corners of the contained window... so that's a workaround.. but it's pretty awkward feeling.

Groupy does allow me to drag resize up-and-down from the top of the groupy-tab.. but I want to be able to drag resize from the top corners and sides of the groupy-tab region... so the whole thing would "feel" like a normal window. 

2) I want the groupy-tab space to be added (and removed) without changing the overall window extent

Currently, if I have a non-groupy window, and I drop another window ontop of it, such that it creates a groupy tab... it adds the groupy tab ABOVE the current window (which is often off the top of the screen, or over the top of something else).... I want it to add the groupy tab WITHIN the extent of the current window rect...thus making the application region slightly smaller to make space for the groupy tab.

Likewise, when I take the last groupy tab out, so that a regular window remains and the groupy tab is removed.. I want the window extent to stay the same by GROWING the application window region to fill the space made by removing the groupy tab.

I want this, because I'm using groupy to do a form of super-flexible region management on the screen.. where I lay out a bunch of regions, and then just drag groupy tabs between the regions. However, without this change, those regions are kind of a mucky mess, because I have to leave padding space above the windows for when the groupy tab will appear. Which is just kind of awkward.