@Midnight9746On the surface, sure, "balance" is always the explanation. But I have a very hard time looking at Lifeline, Nessies, the return of the buster, etc. and seeing anything there that resembles balance. Balance is just the word they throw around to make it look like there's a legitimate rationale for whatever it is they want to do at any given moment.
Perfect example: "pulled back... gains... which gave him... frequent and safer rotations." THAT is a rationale for eliminating Valk from the game entirely, not for nerfing Pathfinder. "Adjusted grapple cooldown to encourage... more tactical choices" means, when translated into English, "he's too useful, his pick rate is too high, and we want, as we said out loud, to SEED THE WAY FOR OTHER LEGENDS." From whom they probably feel there is a greater opportunity for revenue. Not for more varied gameplay. If they cared about more varied gameplay, as they claim, they would eliminate Valk, Fuse, Mirage, and the entire support meta. Imho.