I hope DICE takes all the complaining with a grain of salt. The patch didn't change the mechanics much at all, and almost every powerful star card has a counter technique. Seriously, people keep bitching about the homing missile, but it's so easy to avoid - I would never put it in my hand.
There are definitely game mode balancing issues, but it seems that a lot of people are begging for nerfs when they just need to get better or play differently. I'm not even that good and I can see that the majority of DL-44/homing missile/pulse cannon/etc. complaints come from sore losers.
Most of my bullshit homing missile deaths seem to be from shit spawns/spawn camping (ex I spawn out in an open field on Hoth and just have no cover/recourse in time), so them fixing that will take care of that problem. I've never realllllly seen a whole lot of Pulse Cannon usage so I can't comment on that, but I think the DL-44 is pretty indefensible right now. If they addressed that, spawns, and some of the unbalanced faction stuff on certain maps/modes (aka Empire on Endor, and I hear the last point on TP in Jakku is apparently also a mess?) that would take care of the majority of my issues.
I really feel like it's already too late to an extent and they've lost their initial captive audience with some of the poor word of mouth from the beta, lackluster reviews, and word of mouth post-launch. The fact that a patch hit two days ago and there are still no patch notes is completely and utterly insane, not to mention the patch introducing new technical issues. I have no idea what in the goddamn hell they are doing over there. I really want to like the game more than I do but they're making it hard, all but one of my friends has dropped it and he's only mostly still with it because he bought the season pass (which I think he regrets). He's a fairly casual gamer and this was his first season pass, and he just seems confused at the fact that he downloaded a patch, we don't know what was in the patch, then he looked it up on reddit and people are trying to figure out what all was in the patch. And this guy is 100% EA's "casual" target audience for the game. EA needs to get their shit together quick, and both the paid and free DLC is going to need to be stellar. I'm going to go ahead and pick up Xenoblade because I don't have any confidence EA is going to get their house in order for even just the existing content and game before the end of the year.
Oddly my biggest takeaway right now if I kind of want to try Battlefield 4, I never played that one.