How about a multi-band compressor, and a multi-band send device? Two devices?
One for most people, another for the experimentalists?
Look at me, making feature requests and piling on the work I won’t have to do! 
Sorry if I hijack your topic but in theory you can have this mutltiple-something send device for a lot of FX.
To make this more modular (and this reusable), I think it is time to have the dsp chains in a graph format.
For the mutiple band-filter send device, typically the graph will look like:
[signal]--[split]----[split]------\
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[filter] [filter] [filter]
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\--------[add]-----[add]-------->[output]
Or for the multi-band compressor:
[signal]--[split]----[split]------\
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[filter] [filter] [filter]
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| | |
[compr] [compr] [compr]
| | |
| | |
\--------[add]-----[add]-------->[output]
The split-device will simply replace the send device. The add(er) device will be decided how much percentage (weight) of each input is mixed to the output. Mutliple inputs can be created on the adder device.
Now you only need to route tracks to the signal input of the graph.
maybe just splitfilter in send device?..
maybe this is the simplest:D
Native Renoise Multiband Compressor.
It is the simplest but it is also the less modular. Also the team have to make some assumptions about the hardcoded filer settings (MAybe you want to split on HP and LP, Q-factor?).
this is my fav. multiband and it’s freeware
http://www.x-buz.com/BuzCompFree.html
really good indeed.
+1 for native renoise multiband compressor.
+1 for multi-band routing device
the multi send is a great idea,i hate fiddling with tons of sends all the time
+1 really nice idea.
really like this idea
i want it to be a non-distrurctive multi-band compressor like that one on the picture
my sausage got hard
BUMPPPP!
do you think this will actually make it to the next release? 
[damn this forum is real dead latley.
No it is not, but this topic is no longer as interesting as it was. Folks are eventually done responding.
is there anyway I can fake that device the long way? how can I do it with minimal devices
A native multiband compressor would be and probably also sound great! Especially if it could do upward compression. I use the apple multiband but its not cross-platform etc so shared songs wouldn’t work.