So far enjoying the utility that Saryn's new (re)rework is offering with regards to annihilating enemy EHP. Her actual effectiveness in a mission scenario remains to be tested more thoroughly in Mot, Taveluni and Onslaught.
I happened to come across a couple of promo codes that might interest people (last checked 16/11/2017 please inform me if any are broken so I can remove them):
Heatsword Orokin Catalyst slot: FREESWORD
Feel free to come and play warframe https://www.warframe.com/signup?referrerId=566d38c13ade7fc5727b2442