Well when I played Scout and Sentinel it was so I could fully repair Hk-47. But they are so bad in combat I had to go as a Soldier/Consular. With Consular I was able to quickly raise up repair to 15 or 17, which is enough to fully repair HK-47. I know you said you always play Consular, but Force wise their better at it too than Sentinel. In KOTOR 2 they made the Sentinel better with improvements.
I too wanted to play Scout because out of the starting classes, scout seemed more appropriate for the main character. But with Soldier/ Consular I was satisfied and got to hear all of HK's hilarious stories.