- Cryptanalysis, and globally large scale, calm, problem analysis (groups, fields, vector spaces). I had a recent itch about prolog, constraint programming.

- Wholemeal programmng, haskellers view on problem analysis, graph abstractions, topology.

- Geometry. Back to complex plane ?

- DT, Agda, Idris.

- Sub micrometer physics and engineering.

- Biology/Ecology Energy gathering

- Non invasive medicine

- Threads. Just joking; that's too hard.