Very interesting! Never knew there were so many forms of hedonism.

The hedonistic utilitarian is exceptionally interesting. If we're talking happiness instead of pleasure, then it is not a far stretch to call it the most important thing. You could claim food and water, but whats the point of surviving a unhappy life? From that point it is easy to see the happiness of everyone as the most important thing.

Though like you there is no intrinsic value to anything else, but does there have to be? Could the value of these things be an indirect cause of the quest for happiness?

It may seem that a murderer who entertains millions would get away with their crimes, but if the system was allowed to exist like that wouldn't it effect the happiness of the majority? I'm sure much of our happiness comes from knowing we live in a society with rules to protect us.

Majority discriminating against the minority is a possible outcome, but if the majority has even a little sympathy it may even out.

Truth is the biggest issue I see. I still believe happiness is the most important thing, but I don't think the truth is something that should be hidden just because it would make people unhappy.