gLootOffsetter
Special thanks at this point to Goldpaw, who is the author of gLoot, for his brilliant skin for the roll and loot frame.
This add-on allows the user to set an offset on the x of y axes for the gLoot roll frame. Especially for healer UIs, where the group frame is probably located above the action bars, the roll frame can cover parts of important UI elements which can be very unpleasant in 5 man dungeons where party mates like to loot in the middle of a fight.
The offset can be set through a slider in the options panel. There will be a way to drag around a dummy frame. The dummy frame is already available.
Possible slash commands can be seen by /gloot or /gl.