tool development

I think your request is rather vague, starting from the point, there are tons of GUI toolkits out there.
I'd personally like to write an article on creating some sort of model loading tool with wxwidgets (maybe the start of a level editor), thing Ill probably do, when I get more proficient with it.

There is an old article here based on MFC IIRC, but indeed it would be nice to see more articles on the matter.
However, I think this has been requested before, and nobody seemed interested.

I'd love to see an article on using C# to make an MDX based editor. What type of editor it is, is pretty insignificant imo. Just need to cover the general problems that most editors will incounter (converting mouse to world coordinates, comunicating between wigets and engine, **making it function like a comerical tool**, etc).

I've just started learning C# so I'm not sure how big an issue this stuff is, but I know with the tools I've written with MFC these have been pretty major hurdles.

Matt Hughson