When I say big, I mean as in big project, big pain, etc... It'd be really cool tho.
Anyway, I was reading a thread about yet another desktop reminder program when it hit me... shouldn't this be part of the OS? No, it should be an add on, but my calendar program can be a reminder, so can Act and 1/2 of my other apps. Lots of overlap, nothing is quite right... you know how it works.
So the big idea is this: The Grand Unified Desktop. Basically it would just be the coordination point for many applets to do the things we all want.
Then I Google'd GUD and found a couple. Zope aims to do this via the web. RedHat tried this with a KDE/Gnome combo, but I don't think it went very well.
To do this on windows, you'd probably need to replace explorer.exe and start with something like blackbox. There are lots of interesting GUI's to examine to see what works best. AmigaDOS had REXX ports built into just about every app. I think XML could server a similar purpose here.
At any rate, it's be a lot to take on... anyone intersted in starting a concept list... or is this just too... (insert your negative adjective here)?