OLED won't be here within 6–12 months, and certainly not at affordable prices.
Smart TV stuff is mostly worthless in my opinion, as the streaming quality is generally worse than dedicated devices. It can be useful occasionally though. (like when I was left with only the TV due to some PC trouble)
3D is mostly worthless in my opinion, and I own a 3DTV. Gaming is the only good application, but no 3DTV currently supports 1080p at 60fps, you have to drop down to 720p, and it isn't worth it.
If that's a first-generation Kuro, or a pre-Kuro Pioneer set, you might see an improvement with one of the latest Pansonic sets. I probably wouldn't bother though.