It's really hard to tell whether Ekko's W is ally's or enemy's
Played one game today, played poorly, but there was an Ekko on each team (natch) and I died several times because I couldn't tell whether I should be jumping into the field to follow up a stun (because it's ally Ekko's) or running away as fast as possible (because it's enemy Ekko's).
Usually there are some pretty big visual differences in ally/enemy particles, but I really don't think that's the case here. Same deal with the ult time-trail particles. I had a Sandstorm Ekko, they had a Default Ekko, and I kept wandering into the enemy's ghost because it was bright blue. Ekko's ratios are already completely insane; it doesn't make sense that we should have this artificial difficulty attached to even figuring out which attacks to dodge.