i agree with just about every complaint here, but i dont expect many or any to change because of balancing issues.
it's true that the warthog is a beast now, but wait until you guys see how strong the tank and wraith are. that's what they added the new heavy weapons for though, a smart team will use the resources to their advantage, if they dont then they deserve to be raped.
i like how the sniper is now, it's far more balanced and you can just shoot off shot after shot like before which makes sense and requires more skill.
as for the grenades, they are odd. sometimes it seems that they have the right blast radius and power, but then the next game i cant kill anything with them. i think it comes down to using the right nade for the right situation (frags are better in open areas where spike grenades are better for close quarters). for the most part i think they did hit the sweet spot with the nades though.
honestly the only real legit complaint i have is the respawn points, which will be changed.
well that and i think the game needs another pass of AA