The ability to "cue" insert effects in headphones before it's broadcasted on the actual track. It would make improvising effect chains in a live context a bit easier.
Also, on that note, the option to add effects defaulted in the bypassed state... so, for instance, I can throw a beat repeat on a drum layer, it comes in on the track bypassed, and then I can dial in the settings I want, and then, when the time is right I turn it on?
Is it already possible to do that (without using dummy channels)?