Ergonomics
I put it bright when passing through it in my scan flow every flight.
I think this is not in the SOP cockpit preparation, is it?
I do it after one day It happened to me that i was not seeing CBs ahead. I also check it is not in minimum gain, after the day I was puzzled because I saw slight magenta returns, but not even a single green return. When I realised and turned it auto gain we had damned family of CBs ahead. In that model, auto was just the "click" after minimum gain...
With a more ergonomic model, Auto cal is next to max cal.
This may seem unimportant, but if a major airline airplane goes down in a TS and the investigation finds the cause being one of this things, a few more blood ink lines would be written in the SOPs.