This is two posts in a row that don't see add-on lists attached to. You might think of adding one.
I've adjusted the thinktank interface to my needs as a healer. The focus is to have a good accessability of all relevant information while still staying focused on your char's surroundings (voidzones hi!). I found the placing GRID in the lower center actually distracts me too much from whats happening on screen, especially when the fight gets tense.