AdamKadamon

I've built one of the iterations of this build before. I'd say it does work. The main thing to address I think is why you think glacial shield is "missing". If you're thinking that it's lost personal defence, then it should be noted that glacial shield (and ice shield, for that matter) can only be applied on others and not yourself. The reason ice shield was even taken was because a tier 1 skill needs to be selected from cold dom and it fits the design goal of having at least 5 separate defense-enhancement carrying skills for luck of the gambler global recharge IOs.

I'm a newer player so my suggestions may not be best. The simplest solution without touching your build is Ageless Core Incarnate. It's the solution to many an end-hungry build. On mobile and not able to really open mids, but there is room for end optimizations in the enhancement choices. For example, changing the to-hit IO in tactics with a Gaussian To-hit/end IO would decrease the upkeep cost for a slight decrease in to-hit bonus. The same can be applied to your other toggle skills with upkeep costs. Arctic Fog for example has quite a bit of an upkeep cost, iirc, and could benefit from more slots and enhancements that decrease the endurance cost. Aside from that, make heavy use of heatloss, and carry blue inspirations, I guess.