Look at the past 15 LHW title fights. DC, Glover, Gustafsson, and Shogun are the only "active" UFC LHW's.
Jon Jones is suspended for the time being.
Anthony Johnson is 'retired'.
Chael Sonnen (UFC MW) is fighting in a HW tournament.
Vitor Belfort is 185lbs.
Rashad Evans is 185lbs.
Lyoto Machida is 185lbs.
Rampage Jackson (UFC LHW) is fighting in a HW tournament.
Division needs more young killers and depth. DC isn't getting any younger, and the other bigger named guys are older as well.