DLC classes challenges were okay for GK, an absolute mess for OE, and nigh pointless for SotT.
My theory is that these challenges are dictating balance.
For example 1000 headshots with MWP, it makes the weapon look terrible so they released an overpowered weapon.
For SotT, if you play her the correct “support” way she is absolutely useless. Set up walls to block your team from shooting because you want 500 warp shots blocked/1000 attacks. Or pick up specials to prevent your team from shooting them because you want three lifts simultaneously. Or 250 lifts and kills with the staff so you need to vent 24/7.
Consequently giving rise to: Super low ult CD with multiple charges, the strongest healing in the game with 3 per 8 and global 25% increase and all excess temp health is given to SotT. Etc.
It seems like the classes are created to fulfill challenges rather than challenges made to challenge the class. Because honestly, how else do you release SotT in such a terrible condition?
In my opinion the entire class needs a total rework. I would say 4 of her talents are acceptable, and all other talents and passives need a complete overhaul.
Obviously challenges should be looked at as well going forward, and possibly looking back, if/when these classes are reworked.