Now as far as adding rewards to HM LI to encourage people to run it, I liked the idea of special gear (such as Cartel market gear) or something similar. Something cool, or rare. Not progression gear, but other stuff. THAT would be the bomb.
Hm LI already has that. The Security Droid has a low chance to drop the Midnight Rakling pet, and the Doctor has a chance to drop the Mysterious Egg (which, when hatched, provides you with an Orosquab, which is different than the Orokeet provided by the Unusual Egg). All 6 of the characters that I routinely run Hm LI with (3 tanks and 3 healers) have no need for any of the drops provided, but I still do it because of the pets.