For now you could make a 8 channel track put a comp on each channel, send 1 and 2 to all 4 comps, use "parameter linking" to link each comps parameters together (may take a while but you can save the whole thing as a fx again for use again), mute all but the lowest band on the first one which goes to channels 1 and 2, mute all but the 2nd band from comp 2 which routes out to 3 and 4, do same for the last two.. . Now you have each band coming out from a separate out but all controlled from one plug in :) not perfect but what other apps can do that! ;) . You could then use a js mix plug after a few more fx to mix it back in again :)