sorry for this late reply - I had to fly to a uni lecture...
anyways, yes it bangs the hadware, although it can be made OS-friendly (BTW: the system is in the form of a shared library, but nothing stops anybody to write his own routines, thanks to the extensive documentation that can be found in the archives); yet, I don't have the time right now and, after all, it's not something really needed... who cares about AGA this days, besides AGA democoders (who will be quite happy with the current implementation)?
To have a glance at some of the features, check out also the TCS_demo (on Aminet, too): you may find interesting things like 2 indipendent, variably cross-faded, 256-color screens with some rotzoom effects.
Best regards,
saimo