It would be quite comfortable if the multi band send device had a delay value for the send channels. So you could very easily build a stepped depth using just one simple reverb send.
For advanced usage/options (that could be hidden by default) it would be of course very practical if the multi bend send device had also panning parameter and the delay value was automatable without producing clicks or pitchglitchs.
Please see this example to understand what I mean:
https://forum.renoise.com/t/click-pitch-free-automatable-delay-values-in-delay-effect/42293