Find / Replace Dialog popup the Variable Dialog to auto complete names

[RayFarmer]

It would be nice when entering in the Find: control to beable to pop open the Variable dialog (as in the expression editor) to select variable names. It could be linked to the Limit Search to: control. Like wise on the Replace control when that window appears. 

I know you have that drop down facility on this control but that only remembers what you have previously entered.