i see question 2 all the time when fighting against vader's ship in fleet. his basic is unavoidable, and i regularly get blind on him when reinforcing with vulture droid. his next turn his attack hits the target and blind is not consumed on the attack.
as for the blind/foresight question, that's a good one. never thought about it or seen it come up in battle before. looking at their descriptions, they do the same thing so there's not a way to tell from them alone.
for raid bosses, not sure off hand. if you can, it would depend on the tenacity the boss has as normal.
