Someone please correct me if I'm wrong, but:

I've always been told that raid bosses cant miss. It doesn't matter how much dodge you have, raid bosses have a 100% hit rate. (Block and parry don't count, because it's still a "hit," it's just mitigated).

I've never seen featherfoot allow me to dodge anything by a raid boss in T1-T8 (I took it off my bars at that point).

This makes Featherfoot completely useless for any endgame boss content. I've never put this back on my bars for this exact reason.

Blind may make a difference, but as I dont have a pld, I cannot test this. My guess would be no. Aren't a lot of bosses are immune to the effect?