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.

Web UI is an interesting problem, but even just building a proper data structure can be very challenging, when the user's environment is complex and one needs to build a simple yet extensive enough tool.

I see it a bit as rock climbing : I looks simple, but not everyone can do it right.