So I pay a monthly fee and then I get what?..
-map packs: EA will have to sell map packs as a separate DLC as well. They'd be losing a ton of money if they didn't. Not everyone will subscribe.
-Analysis Tools: Big woop, maybe some pro players care about that.
-???? : HAS to be weapon mods of some kind. How else will this subscription make any sense? Take it, it'll piss off people who don't subscribe of course. And if you don't think EA would do something so dumb, just recall the battlefield 2 special forces expansion, which added weapons for only the expansion players in the original maps.
The other option is that the service offers so little difference that only a small minority of pro players buy it....what do you think is more likely?