When working in Latch mode I don't see if a track is in automation. this is important since it's easy on the S3 to accidentallly touch a fader and put in wrtie that way...
-a simple solution a blinking "rw" in the display
-more elegant the whole display blinking
- very nice: (like on the ProControl) using the mulitcolor LEDs to indicate the automation mode and status
green - read
yellow - trim
and blinking red - automation is currently being written