OK so this probably would only be useful to a handful of people but....
I frequently have my enchantrix fixed price config window open while working the AH, I use a big monitor so moving the window over solves the problem for -me- but at lower resolutions (or when on my laptop) toggling between ah and the config window can be difficult because when you change window focus back to the ah from the config window the strata doesn't change. Now I have no idea how this is handled code wise if it would be the ah window that normally should change its strata on a click in the window or if its the config window that should decrease its strata when no longer focused.. I know its trivial but would be handy :P
Should be possible to script it into configurator, I know the Rock interface window some ace mods use does this and is moderately useful and sometimes annoying. That window looses focus when mouse if not over it (personally annoying) I think having Configurator frames lower strata when another frame is clicked would work as a better option.
The fix to this is to have all your big dialogs live in the HIGH strata where they belong (not DIALOG - that's for quick prompts), and then enable :SetTopLevel(true) on them. This enables spiffy logic in the UI that automatically raises windows over others in the same strata when clicked.
I have done this for configator windows and a few others, e.g. the btmscan snatch list window.