Alright, I noticed a lack of thread since LotV rush. I'm playing Protoss.
What are builds against which you guys have problems or builds that you love doing?
A personal favorite lately has been to open 2Gate into expand and harass with 3 or 4 adept, try to get something out of it. Then I tech into Stargate and build phoenixes and keep on the harass, eventually getting to my first base. I'm careful not to lose any phoenixes, and then I will push at around 8 minutes with 6 to 8 phoenixes, a group of stalkers and zealots and most importantly, a few DTs mixed in there. The Phoenixes lift the important/dangerous units and the DTs will most often at least deal their cost in damage or more. I can generally cripple my adversary enough with this attack during which my third is firmly established and I start by fourth and switch production to void rays/carriers.
As a terran, adept play worries me some. In particular there is a warp prisim 4gate adept all-in that is hard to hold w/ any kind of expand build. Remember that with the new warp prism pickup distance you effectively have free blink for all units, including adepts. I've seen some pros stream warp prisim adept pickup drop stutter step at the speed a warp prisim travels and good lord does it look strong.
Oracle play, proxy or not, also still seems to be a thing.
You might also consider going into the midgame for the increasingly standard blink stalker disruptor composition. I hink this is most common in PvP. Disruptors at a high level control space more than they do damage as you can expect your opponent to be competent as splitting. Of course, that assumes an engagement out on the map where splitting away is possible. But in lower leagues where reaction times are slower and splits not so great, disruptors can do terrible terrible game ending damage in one or two good hits. Just be right careful of the friendly fire.