Most of the endgame RW chests are great bundles of stats. The teleport is the reason why enigma gets so much more attention.
That’s fine for a merc shield. To compete with spirit, a new RW would need to be 3os or less and come with elemental amp/pierce combined with fcr. The other stats to play with would be allres, life/mana. You could even play with the idea of conviction on a 3os shield that has fcr. This would make it a merc option as well as self wield, much like infinity.