Roshone is etched towards the top of my "least favorite character list" for the seemingly negative impacts he had on other characters:
Killed Moash's grandparents which set Moash on his current trajectory (so I indirectly blame Roshone for all of Moash's actions)
Sent Tien to war where Tien died which contributed towards Kaladin becoming depressed
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***With all of that said: If Moash and Kaladin end up having an epic face-off in Book 5, then I will also blame Roshone for indirectly setting that up and immediately place him on my "favorite character list".