To go along with the idea of forcing a window to show, I found out how to make a window STAY open, instead of closing all the time (best example, the Target window).
Change DynamicDataFilter="0001" to ="0000"
This made my target window stay on top, even after mashing the Esc key
I assume this can be done for all dynamic data (so far I've only tested with Target and Casting windows). Not just the window, either, but the data within the window as well. Within my modified Target window, I can hide some elements (such as the target's health) by leaving its specific Filter set to 0001, yet still keep the border and backdrop of the window itself visible with the window's page Filter set to 0000.