When clicking the 'Add' button, the FX is added in the end of the chain.
Several parts to this FR:
1) Allow to add the fx below or above the currently selected FX.
2) Allow drag-n-drop of new FX
in-between other FX in the chain (again, it only adds them in the end currently)
3) Allow
replace FX, in the existing position.
4)
(added recently)
An idea: Show (numbered) grid slots in the FX chain. So you can add an FX, say, immediately in slot 8, leaving previous slots blank. That way you can prepare some blank space between FX to add inbetweens later thus simplifying the process.
Example FX Chain:
1 EQ
2 ----- (empty slot)
3 ----- (empty slot)
4 ReaComp
5 ----- (empty slot)
6 Reverb
One extra benefit to the above: you can save FX chains that add/replace fx in specific slots. Say you get into a habit of putting your compressors on slots 6 and 7. You can try out several saved FX chains of compressors at slots 6 and 7, and they will not mess with the fx placed previously or later in the chain.
Discussion:
http://forum.cockos.com/showthread.php?t=53556