Well, in that case ...
I've 'personally' become entirely dis-interested with this script. If you're looking for a 'smooth' interface, sure the sliding is nice, and helps to pull it off, but the windows themselves don't look right when they are that small ..
You're sacrificing the basic aesthetics of this engine to try to incorporate more advanced ones. How do you honestly make that leap?? You need a base before you can build. The conflict is that this application is capable of handling both basic and advanced aesthetics(as most are). There is no reason for that substitute, so I'm gonna have to say I 'personally' don't like what you've chosen to do with this system, and that you're decreasing it's overall potential greatly.
BUT!! I'll continue to support your endeavor and give you feedback so long as this script continues to grow, but I can guarantee you that I won't be using this in anything I ever make.
**You are definitely doing a good job though. Don't take what I say to heart, I just don't see the reason to sacrifice the basics, when the final outcome is not what it has the full potential to be. It makes me feel like the creator is giving up by not attempting to achieve the best ... IDK