WAR will change a number of things I hope. It will change the boring, closed minded corporate idea that only pve based MMO's can make money. It will also change the way people perceive what pvp can mean and open world pvp can mean to some extent since most people didn't really play DAoC who play MMO's currently. It will possibly force Blizzard to innovate or just steal some more ideas. It will possibly force Turbine to innovate more or start a sad decline. It will be on every kid, teenager, young adult and older adults' pc for this year and so on until it peters out. They will hopefully come up with a console version with voice chat for the Xbox, the most online game friendly platform out. WAR will eventually get directX10 and become a contender in graphics with the big boys and probably even upgrade to directX11 when that comes out. WAR will be fun. and it will have a fresh world, and lots of races and classes, like Vanguard. Only more funner.
The Public quest system will be interesting and may have some long term ramifications on how things work in future MMO's it may even become a standard, just as traits have become a part of Warhammer's Book of Knowledge or whatever its called. Open dungeons may also work well, we'll see.
p.s. I'm not trying to be a fanboy or too negative or too positive, just trying to realistic.