The current legendary mechanics should need an overhaul imo anyway, it would be a nice way to implement low-tier legends. I really miss catching legendary pokemon. I can understand why mewtwo, rayquaza etc. are 1 player only and I would keep it that way, but it would be nice to keep entei, raikou, suicune, ho oh, lugia, celebi, virizion, terrakion etc. etc. because they aren't that viable in pvp anyway.