..It is very easy to forget to cancel direction indicators on a motorbike ( they do not self cancel ) ....
Agree, and that is where "habit" can come in handy. I find myself pushing the indi cancel button quite regularly .......... just in case.
I have done the same indi repeater at the top of the screen, nearly in eye-line, as Culzean describes on a couple of my bikes where the dash lights are difficult to see in bright sunlight. Thankfully more modern bikes seem to have got this right at last, I have 2 relatively new bikes which have very easily seen indi warning lights on the dash display, my older bikes are pretty poor in this respect.