1. That's straight up denial, dude. The fact that houses like FvJ, Insidious, Halloween etc. broke 120-180min waits every night, when none of the originals last year broke 90 min on the busiest of nights is clue enough (I know wait time doesn't usually refer to popularity, but in this case it does). A LOT of people started coming to the event when they saw TWD, and Silent Hill, and Cabin, AvP, Insidious, etc. on the billboards. The amount of merch sold due to the IPs is insane. And so on and so forth. To say there's no evidence proving IPs are making the event more popular is bullshit.
2. That's you. I get you found the event to be a lot better 04-10, and that's your opinion and you're entitled to it. But you have to remember a lot of us on here see houses a lot differently from the 14-34 year olds that go once a year, if that, and see 3-5 houses in a night. Half of them intoxicated or fully trashed on top of it. This is the crowd the IPs are for. These are the people that saw the "water effect" in TWD 4.0 and thought it was neat. Hell, these people made The Purge way more popular than it deserved to be. We are the .1% of HHN attendees, and chances are most of the event is going to be catered to the 99.9% of individuals who give them the most amount of profit.
That being said, last year did seem like they significantly tried to boost the scare factor in comparison to the last few years, and I commend them for it. 2014 was by far the least scariest year I've attended since 05, no matter how good the houses looked. Last year gave me some great scares, and a lot of people viewed Insidious as one of the most intense houses they've done ever (I don't agree, but I digress).
I'm with you in wanting more original houses, and I mean ORIGINAL. Uncharted topics and such. But since it's so early, with nothing to speculate upon yet, all we can do is say what we would personally like to see, and give our best guesses as to what we might actually see.