On this topic I see the problem of Set items as something that could be just removed. But seeing that EHG want them on the game, in the end of the thread I conclude thanks to the comments that it would be nice if they have a way to be distinguish them from Uniques so they’re not “Weak green uniques”.
They COULD have build-enabling affixes (along with skill visual effects if they don’t plan to sell skill effects in shop) so, if you “sacrifice” 2-3 equipment slots (I prefer to only exist 3-set parts, you decide if use 2 or 3 parts of a set) were you could have good Legendary items, the reason will be because the Set create a new build that it isn’t available in any other way. I think would be the best reason for Set items to exist. I would love honestly to play with something like that.