After getting all the way up to level 43 powertech. I have noticed one ability doesn't really get any ranks. Almost ever single ability at the powertech and mercenary's disposal can be ranked up to 2-5 depending on the ability, but the cool down doesn't get any. Now I'm not saying have the rank increase the time for the vent heat ability be shortened in time after every use, but it helps to have it at least vent off more heat then standered half. Half the boss battles make it a little hard to control aggro when the tanks can't even cool down fast enough to keep the aggro on them. Please give the vent heat at least a 2ed ranking for more venting.