If you’re trying to have two different master outputs by changing the level in the Device Routing tab of the Editing Patch window, I don’t think that’s going to work. It’s changing the level of the device itself, so the device output level will be the same across all patches.
If you select Device Outputs tab, you can add effects to the output of the device as you describe.
If you want to get a little more selective with the effects, but still being able to assign them to multiple cues efficiently, you can add effects in the Editing Patch window under Cue Outputs, but assign them to, say, 3-4. Then activate 3-4 under the Device Routing tab. This way anything patched to 3-4 will still be sent to your main 2 channels. So on each individual cue, if you want it dry, turn the cue up in 1-2, and if you want it run through the effect, turn the cue up in 3-4. Make sense?
Mark