There's talk of adding a buff for SE sets which would be akin to Co-Ordinated Attack and Co-Ordinated Defence .. and that's a great idea and will add worth to SE sets which are, currently, almost valueless.
Another idea would be to actually USE the drops from those SE's that have no current inventing use (suggested before, agreed to in principle by BG but seems to have fallen off the back burner along the way)
So far, the following SE's have no invented item attached to them - and these invented items could be of any rarity - LE, other SE, Crystalline - anything ..
Empress Tinny
The Boom Hawk
The Drunken Sleepwalker
Drogorath The Vicious
The Soul Thief
Nahuati The Gigantic
Grooanga The Trickster
Gunnolf The Corrupted
Emperor Sidd
Lord Xinderoth
Professor Morbidstein
The Shroud Weaver
Count Gorbalz
Xinderoth
Xind Observer
Any of those items currently in the AH have almost zero value - it would be nice for them to be useful / appreciated once more ..