Speaking of hallucinations, did anyone eat the magic pill that would show up inside the cave after each friend was found? I did it a few times, but found the LA clubbing dream quest to be a bit on the dull side. I don't think I actually saw the entire sequence.
I didn't notice those pills after saving the first friend, so I ended up taking the pill like three times in a row once I realised what it was. It was alright; I like those sorts of things in games, it reminds me of the original Max Payne. But yes, it was rather limited and just made all the characters seem more dudebro-ish. It was nice in the way that it changed up the setting though.
I think the last one I saw involved a confrontation with a couple of "gang" members in the club bathroom. I lost interest at that point, as it didn't seem to be revealing anything that important per the characters.
That was the last one I did also. I'm not even sure if there are any more to be unlocked. I agree, it reveal much about the characters, besides of course managing to make me like them a little less.