1) pretty sure there is a colorblind mode that changes the effects colors.
2)agree bigger zoom is needed
3)I'd suggest using the event chat log to re-read anything you missed
4)same as 3..
5)can't help any here
6)Keep your own effects turned to max and turn everyone else to reduced or none to help with that.
7)instead or using the mark try to focus target.. it adds an arrow over your target that only you can see