Well, its a minor reward, when you reach BR (Battle Rank) 7/14/15/20 you get new kinds of armor, the BR14 is spiffy looking, solid gold

as well as of course new certs and implants. Once you hit 20 tho, thats it, and I'm at 16 now after about 3 weeks :). There are also command ranks with similar benefits for leading successful raids, etc.
You *can* lock down continents by capping all the bases, which makes it so the only way the nme can get in is thru the warpgates with the new lattice structure, and if you cap the bases on the other end of the warpgates, its impossible to unlock the continent until those bases are resecured. Theoretically you can take over the entire world, but its VERY unlikely.
The true fun that comes from this game is how amazingly natural teamwork occurs. You hardly ever see lonewolfers, everyones in a squad or outfit of some sort making coordinated attacks. It's also nice to have epic scale fights over continents: locking down a continent when you started with only 1 or 2 bases is far more gratifying battle than having more points than the other guy at the end of a half hour (ala BF1942)
Once they get more communication features into PS, it'll be great. Right now its very hard organizing an attack outside of 3 or 4 squads without external programs, but not impossible.
NOTE: not knocking BF1942, fucking love that game, just using that gametype as a point of reference.
-DSR <---Only has time to type because PS beta servers are down for a patch
EDIT: by new kinds of armor I mean a new look to your current armor, NOT altogether new kinds of armor. Signifies to everyone else how much of a badass you are
COMPLEMENT EDIT: By the way, thanks for saying "good point" as opposed to the "fuck you" "I knew that dipshit" or "1 0wN j00!" responses I usually get, nice to have other decent posters around
This comment was edited on May 5, 12:30.