I also have not seen many people use proxy bunker. Are you for the reaper nerf or against it? By the time you get 8 reapers, the enemy can have sentry/stalkers, maurader/siege tanks, or roaches/hydralisks. Reapers cost too much gas. Has anyone ever seen a mass reaper game?
Not against me, but I have seen a dozen replays of top-tier players such as Idra getting completely screwed over by it. I am only in Platinum atm, and I haven't had huge problems with Reapers yet.
For me, the largest change is the Siege Tank nerf. They are just really frustrating in a lot of maps with chokes since you cannot rush to them. In addition, right now they are a
huge counter to Hydras, which in turn are more or less the only legitimate counter to Terran air. I've been lately having huge problems with Thor/Tanks/Vikings/Banshees, because those Vikings will really punish all of my air, and the only other unit that can even attack air is Hydras, which get slaughtered by tanks so fast it looks comic.
I've been having a fairly good matchup against 'Toss lately, but every small bit helps. Ultras weren't that great to begin with, although I did beat one Zerg with Ultra/Queen/Hydra.
@Queens: I think they are where they need to be. Sure, they are immobile early game, but when it comes to mobility, Overlord Dropships and Nydus Wurms help to get them quite close to where they need to be, and both of them also spread creep for you to plant tumors on. You can really just tour 'round the map with an Ovie with Queen in it and fill the whole map with creep, if you so desire. Afterwards you find your Queens are surprisingly mobile. They are also pretty good in ZvZ where both players are furiously spreading creep.
@Worms: I have found that you cannot rely on them solely to penetrate your opponent's base. They are quite handy getting map control on other parts, though. You can link your expansions for faster travel, have one just nearby your opponent's base so you can counterattack really fast or to get a flank on him. They also work allright if you are engaging the opponent on a different front at the time. Just a few Banelings into opponent's mineral line can do wonders, although for smaller-scale assaults an Overlord drop is usually better. They do seem a bit lackluster, but they do have their benefits.
@Mothership: I think it's allright. Vortex definitely makes a huge difference. The unit probably needs a slight movespeed increase, though.. It's like, slower than slow slow of slowiness.
None.