I think the patch helped a lot.
The tactical light in my opinion was the most necessary. I know some people say they don't see it very often or it isn't that big of a deal, but I call BS on those people. 50% of the people I come across in this game have it on their primary weapon, and almost 80% have it on their sidearm. Fighting against a guy who has an 8 foot wide ball of light as bright (or brighter) than the in-game sun is very unrealistic. And don't even get me started on how it still works outdoors in the broad daylight.
IRNV, while very realistic, was really a noob item. I've had it for a month now and just started using it the day before the patch came out, simply because I was tired of being killed by people using it. Seriously, go look at some of the with/without photos of the IRNV, you'll see images where it looks like there are no enemies until he pulls up the scope, at which point you'll see 3-4 guys hiding that you would not have noticed before. IMHO it SHOULD be like this - you SHOULDN'T know they are there, as this requires more skill and requires you to be less of a run-and-gun COD player.
Mortar - definitely required. I played on the eGO 64-man server the other day, was stuck on the other team opposite several eGO players. They were ALL using mortars (I was tempted to jump in to vent and call them pussies

), but seriously I couldn't take more than a few steps in any direction without getting killed by a mortar round. At that point it's just not fun, and with my limited gaming time I want to have FUN, not be the victim of some noob using a noob-tube easy-mode button.
Overall a good patch, bringing BF3 closer to what it should be: a war simulation that is in between COD and ARMA (closer to ARMA) on the realism-o-meter.