What kind of upgrades will there be in the game? and if i dont want to pay will the game still gimme a chance to be good and still be enjoyable?

What kind of upgrades will there be in the game? and if i dont want to pay will the game still gimme a chance to be good and still be enjoyable?
there is gonna be alot of upgades to both wepons and maps
1. maps
they are includeing new maps to the game as well as remakeing the old dock map which pre-realease players still remember for some reason it has been taken out but it is comming back. Also k2 are putting the graphical rain in which u see on the trailer many more inprovements to maps...just to lazy to type it all

2.wepons
i am looking foward for the new weps since the psg1 my faverate sniper is coming also ive heard of new smgs new grandes (includeing flash granades)
new assault rifles is on the way.

3.others
apparently there is gonna be a squad bassed system in place with 5 different
sollection of armys to choose from (atm there is 2 just iddentical)