SMN was already on the low end of single target DPS
Far from it. They're considered the most powerful ranged single target DPS.
Replacing Thunder with Blizzard 2 is an absolute Joke
Yeah it is, and it adds very little to the class. Tri-Disaster has higher damage, a greater duration and is ranged.
Having us have our pets on full "Sic" or be forced to control ALL pet actions
Thats when the Pet is set to Obey and Steady. If the pet is set to Obey and Guard it should use its auto-attack as it always did. As said earlier in the thread.
Most endgame content most difficulty fights are single target checks and burst checks, both of which SMN were weak before
A SMN can handle all of Coil just fine. They have high single target DPS and bring strong utility with Virus, Eye for an Eye and to a lesser extent, Resurrection. A DPS drop isn't enough to ruin our viability, even if its a big one. The change in the boots is much worse.