I'm fine with the loot system idea, but from my limited experience, it does not seem to be working as intended.
15 runs of a flashpoint and every loot from every boss is the same with 2 exclusions.
For Arhiss, it has three bosses. The first two drop one item each. The last boss drops two. That's 60 items total. 2 out of the 60 were sith warrior gear. The rest was bounty hunter.
First boss always dropped BH pants. Second dropped BH chest. Last dropped BH helm and a pistol. Every time.
I guess it can be horrible RNG or maybe Bioware tried to implement some intelligent loot system and it is not functioning correctly?
As far as not wanting people to look the same. Well I don't either, but this is an MMO. Until they allow gear customization, people looking the same is an inevitable result.