I agree that Moore has given the entire movement a taint that will be hard to shake off. That said, if you go to their website occupywallst.org, your solution sounds similar to theirs. Maybe there appears to be no real purpose or real agenda because they aren't forcing themselves into a "Left" or "Right" ideology. They are trying to find a solution by listening to everybody.
The website talks about how this is not the worn out distracting battle between Conservative vs Liberal but rather one between the top 1% and the other 99% and how the top 1% has completely and thoroughly corrupted our government.
You and many others may belittle the movement and paint it as a bunch of 'hipsters', 'topless hippies', or whatever, but their message is pretty clear (if you listen). The country is being fisted by the top 1% and BOTH sides of the political system is owned by them.
Here's an example I just pulled out of my ass of the corruption this movement is trying to wake people up to: The government, through corn subsidies, gives you 7 free twinkies (through taxes you've paid) for every 1/3 of an apple.
Need I remind you of the scam that is healthcare? For me, what really showed me that both sides were bought and paid for was when Obama 'fixed' the healthcare system by forcing people to buy private for profit health insurance.
I could go on, but I'm depressing myself.