Sylvanas have bad writings in latter BFA and can’t be sure for SL. In Legion she was strong. Take care of all the horde and work for forsakens good.
All alliance players ignore the fact, Gen attack warchief of the horde, this directly should means war. If we attack the high king, this can be as burn of the world tree.
In battle fo UC, Sylvanas save people with open of portals and give them gas masks. She even give traitor Saurfang a choice to live and see another day of the horde. Here writers can’t explain why if she needs souls, save as much people possible.
Writers make mess with Sylvanas character, as they don’t know also her secret plan… Next one will be Tyrande. Even they are my two favorite characters in WoW.
Sylvanas as final boss, again to see Thrall and Jaina makes me ill, again green and blue Jesus save the day? Jaina have more cinematic time in BFA, than Sylvanas.
For me killing of Sylvanas will not happen, I expect from her to save the boy king in next patch after 9.1 and then may be writers will finish her story, but still don’t believe to be killed.