I don't think there's any place that lists them all online. PP is kind of protective of them. Forward Commander and iBodger contain them but since they're army building software you'd have to construct the list to view the benefits as opposed to simply reading off a list.
I think the strike against the Hardcore (which was only like 6-8 participants) was that it was on the same day as the Highlander. A lot of people seemed interested in one or the other, not both. 6-7 games of Warmachine in a day is arguably too much of a good thing. Besides that, the painting requirement eliminates a number of possible participants right off the bat. I know a number of people who enjoy playing but don't have a painted army to their name.