Saleen did what he did in order to strike fear in the Sikeqinyans and also to lure more Holy Masters into descending. Without the blood soul tower, what could he use to lure Holy Masters?
A blood soul tower would need to contain at least 10,000 souls in order to be effective.
Sharman's gaze was dim. She wanted to become a general, not because she wanted to kill, but because she thought it would be an impressive thing to do. She wanted to lead countless soldiers into battles. In her heart, battles were games that noble families played, where both sides exchanged prisoners and money.
When she had first arrived, she came with the armies bringing up the rear, so she did not get to see the terror outside of Lonestar City. Later she managed to witness everything, and she could not take it.