It would be very helpful if thing such as the warlock Demonic Circle had a unique color if viewed by the owner, where everyone elses was different. For example, make my Demonic Circle appear green to me, and every other warlocks Demonic Circle appear Purple. This cannot be accomplished client-side. The server would need to implement it.
This idea could be applied to all other character specific spell and effects and would be a nice QOL change.
The main problem I have is when two or more warlock portals are very close together and it makes it very confusing which is mine. I constantly misjudge my range because of it and it causes losses all the time. At peak hours on Blackrock there will be 5 or more portals bunched up making it impossible to distinguish. Just a very annoy problem with no client-side solution.