RFE: Adding a feature like "smart placement" or "assisted tiling"

Hi folks!

Having used both tiling window managers and stacking/compositing ones, I would like to see some features in the latter ones to allow some sort of assisted window tiling. Somewhat like xfwm4's Automatically tile windows when moving toward the screen edge, but much beyond that. Today we have those large displays where many application windows and terminals could be arranged on a single screen. Having talked to friends and colleagues I got the impression that many users of mouse-based window managers would like to have powerful tiling mechanisms but shy at going all the way switching to tiling window managers.

But how should these mechanisms look like? To explore this topic I hacked a simple demo script and a wannabe white paper as a start for a discussion. What do you think?

Cheers.
Björn