Recently on the Patch 10.2 PTR, Morchie's timers have received a longer cooldown on the Patch 10.2 PTR making the encounter much easier!
In addition to the trap nerf on the encounter, another hotfix was made previously that extends the cooldown on some of her more deadly abilities.
With the large decrease in Familiar Faces's frequency, there's a lot more standing around on this boss fight now and less running from the Clones! The downside is that your tank will get blasted by more Sand Blast but it's a worthwhile tradeoff!
With all the nerfs now it feels way more reasonable. However, this boss still seems a little backwards as dealing with the adds the correct way (using the Traps) does a lot of extra damage, but not dealing with the adds using the traps is easier and leads to no damage taken on this encounter. You'll probably see coordinated teams on this encounter not use the traps at all and just use mass AoE CC's on the adds (e.g. Mass Entanglement).