I started thinking about this because of the seasonal titans. They spur more activity and do die faster because more people hunt them. Also because TKP is less an Hour hunting them is more significant than an hour on a normal titan if your going for TKP over a secure.
I rarely will try for TKP on Titans because it would take around 9+ hours of hunting to get the drop (3 full hunts clearing a Titan) Lots of others must feel the same as many titans will just sit there once they have been secured.
I know Grim mentioned the Christmas LE's dropping some unique potions. I thought this issue could possibly be solved with some unique potions.
-Titan Magnetism (works like Animal Magnetism for Titans)
-Titan Doubler 1 ( x3 or x4 amount of kills, but Conserve does not work while active) Sinks more Stam
-Titan Doubler 2 (x3 or x4 amount of kills, but Lightfoot does not work while active) Sinks more Stam
-Cursed Titan Doubler (x5 amount of kills, but works like a cursed buff and Unbreakable does not work while active) Sinks more gold
These ideas are meant to lower the time to kill a titan (make it more appealing to the masses) while still sinking the same amount of stam/gold if not make it higher to keep the economy from crashing.
Another possibly way to make Titans more appealing is to have new "Seasonal" Titans that appear in each Month of the year.