making OSExt truly modular, no more compiling in the modules you want, you just download a module and put it in your modules folder
adding crash handlers, so the calculator doesn't reset and you get a (hopefully usable) crash report
support for letting other programms overlay themselves over the normal os screens like the miniclock
preemtive multitasking, so no programm can freeze the calculator (unintentionally)
remove the flickering from the clock
desktop module with files on the desktop, and the ability to start programms from the desktop to edit the files
a file permission module, so your important files are (pretty) safe from the programms you run
let the screen go darker and turn off after a while while being in menus, like the os.
System shell (becaus I like linux :) ), to which other programms can submit commands via a system call
running programms in windows inside the desktop with cooperative multitasking. that would mean that if a programm wants (or has a bug), it can freeze the calculator