If I stayed in application development, I'd probably move towards web design. I don't think enough has been done to make interfaces effective, pleasant to use,

If I stayed in application development, I'd probably move towards web design. I don't think enough has been done to make interfaces effective, pleasant to use, and intuitive. What interests me is research into education and learning. I'd like to develop a domain specialty there. Day-to-day I've lost interest in this or that build system, IDE, programming language, framework, etc. I'm more interested in the specific problem I want to explore. To do that, I feel like I need to pick one language and working environment, then become an expert in it.