After several days now working with the new SQ6, I really like this little console. It sounds good, has a fast processor, flexible routing, a small footprint and looks really nice as well.
I´m getting more and more familiar with the operating concept, but there is one mistake that I make again and again - I forgot to switch back to the main mix before moving the faders for the guitar solo 
The little blue LED simply is not enough for me. I would really like a more expressive visualization, when I´m not on the main mix.
Is it possible to invert the colored channel displays (it means green font on black for the inputs) when a MIX other than MAIN is selected? This would be a helpful software option. Maybe you could add another option to select a MIX only while pressing the corresponding AUX/GRP/MTX-Button. Like the behavior of the CH to all MIX Key, or better like the talk-button in latch mode. Short press switches the mix, long press switches back to main immediately after release. How do others think about it?
While I am all for giving a user options, I wouldn’t personally enjoy any of your solutions. My suggestion is to just give it a little time. Switching back to the main mix (assuming you are running FOH…) after adjusting something else will become fairly automatic after some repetition… as will the habit of always making sure you are adjusting what you mean to before you make any adjustment. It really will just become subconscious after a while.
@Milow
good idea, like it too
+1 for being able to hold a mix key to edit and release to return to LR - that would be really useful for wee tweaks.
what is wee tweak?
@SDCyclist: Thanks for your reply - I hope I will be able to learn someday, but neither on Yamaha, nor on Soundcraft consoles do I have this problem so often. I can not imagine why, yet. For me the inverted channel strip color would be helpful, I think.
“… like the talk-button in latch mode. Short press switches the mix, long press switches back to main immediately after release”
Brilliant! Yes please.
A wee tweak is the sort a Scot makes. 
“The little blue LED simply is not enough for me. I would really like a more expressive visualization, when I´m not on the main mix.”
How about having the FX and Mix LEDs blink when in either of those modes ?
X32 users will recall how nice it was when the “Sends On Fader” button was made to blink when that mode was selected.