AUX Sends on the Summit and S16 digital mixers should be pre-EQ, pre-delay, pre-dynamics when set to "PRE" fader. As it stands, the pre/post setting only affects the fader and does not allow users to disengage the EQ, delay, dynamics for use in live situations.
While the pre/post settings currently employed by our Digital Mixer are somewhat standard on digital mxiers, we understand that having a post-EQ, post-delay, post-dynamics signal sent to the AUX when you've specifically set the AUX to 'pre' is somewhat confusing and perhaps troublesome in certain live setups. We're going to look into what can be done to make this the perfect live and recording mixer possible, whether it's through firmware updates or by improving future products.
Oh, and to clarify - Sometimes you need them as they are now - particularly for keys, bass, and guitar (you may need the gate and comp in the monitors). If the drums are in the monitors you'd want the feeds post gate post EQ also. Please reference how the StudioLive does it - we spent quite a bit of time convincing them to do it like that :) . Also note that in live use we want the channel mutes to also mute the aux sends - again we spent effort convincing the StudioLive to be updated to do this.