So we are about to be 3 expansions into the year of the raven and Prince Keleseth is still as frustrating as ever. The main argument for the card remaining unnerfed is the lack of variety in other 2 drops. Hence why aggro was running Amani Berserker early on. Until everyone figured out that the overall increase in winrate for running the prince made running other 2 drop obsolete.
So the question is: If by the mid point of this expansion, the play rate of keleseth hasn't decreased significantly, is it time for a nerf?
Blizzard might pull a Patches and say "time to nerf it right at the end of it's lifespan", or they might just say "it's not that broken in Wild" and just leave it be. Personally, I don't think it's gonna happen.
Kele doesn't see much play in wild so I doubt it will get a nerf right before it rotates. Compared to patches, which was incredibly dominant in wild and still sees play in things like odd rogue or pirate warrior, would've been an issue if it wasn't nerfed.