It would be great if the priority symbols could be colour coded, so that a list can be quickly parsed for priority by eye.
What do you mean by “priority symbols”?
You can use different tags with different colors to set different priorities.
The symbols that denote the priority of a task. It looks like a battery symbol.
… and I’ve just realised that it is an “energy” symbol.
I’ve been using it for priority 
Colour coding would still be useful I think
You can filter them as you want.