I have previously spoken against the embedding of shells in PyPE, primarily because I have had bad luck with certain editors crashing during experimentation. What do I mean? Take any one of a number of Python source editors with an embedded shell and try 'while 1: pass'. Note how you've essentially killed your editor? Ick.
During my use of wx.Shell, I've come to the point where embedding shells is somewhat reasonable. You can get an ugly command-line and/or Python interpreter with the current shell, but that's only one. I, like many of you, tend to have a handful of command lines open, not a few of which are Python shells, and honestly, I prefer seeing a shell with syntax highlighting.
With that said, I've taken some ideas from Orbtech's PyShell as shipped with wxPython, added remote execution capabilities, and added the ability to use ctrl+break to attempt to stop the current execution. This doesn't work all the time, so if necessary, it will close stdin on the remote shell, and kill the process after a second or third ctrl+break (automatically starting up a new shell as necessary).
My plan is to make adding a Python shell or command shell as easy as creating a new document, and probably just remove the shell tab on the bottom toolbar.
That's about all from me for right now. So much stuff to do.