I am not sure about what provides the advanced tank icon but I personally liked TKM alot even after the CU nerf. We are not the damage dealers that we once were but technique buys you a lot, esp in PVP. In fact, I was Master Commando/TKM when I became a jedi. I got to the point where I had to surrender one of my master titles and I started with Master Commando. I still find COB and the damage mitigation TKM provides very useful.