However switching a scene is only displayed in the Axe frontpanel, not in the MFC, is that correct?
Yes if you use dedicated switch for dedicated scene.
You should see for a second SCENE X on the MFC display and then back to the preset name.
If you use scene INCR/DECR than no, you don’t see any changes on the MFC display.
I use scenes a lot, 3 dedicated switches on the MFC for Scene 1, 2, 3, 4 and 2 switches on the EXT4MFC for Scene UP / Down.
Works perfect for me.
So is it possible to have an external switch that includes led's to show which scene is currently active?
Theoretically yes if the external box has electronics and using a battery of course (makes the whole thing complex trying not to forget to OFF the unit after playing so the battery wont drain) but once you switched to another preset which starts @ scene 3 for example, the external switchbox will NOT show scene 3 LED ON as the MFC cannot "read" the status of the external switching, it cannot do that as the external switching is momentary switch.
Only after clicking once on any of the switches, only than the MFC can "see" it.
BTW my switches were set up 2143 on my new external switch box , and I had to switch the wirings as well...
You didn’t have to do the wiring change as you could simply let the Axe to "learn" the switch cc, end of story.
It could be any order, 1234, 4132, 3142 etc, doesn’t matter, you just hit ENTER on the Axe for the function you would like to assign a switch to, the Axe will "listen" to the switches, than hit the desired switch, the Axe will sense the cc and display it and that’s it.
Defining ext. switches can't be simple than that.