I recently wrote a blog Powershell_Ise Can Do a Lot More Than You Think where I described the ability to program it to do new stuff. Karl Prosser has picked up the baton and written some cool scripts programming the PowerShell_ISE to make it do some of the features that he had put into his amazing PowerShell Analyzer. I encourage you to read his blog and study his code so you get a feel for the sort of things you can do and then use Karl as your inspiration and write some of your own extensions and share them with the community.
You can read Karl’s blog and get his code HERE.
Jeffrey Snover [MSFT]
Windows Management Partner Architect
Visit the Windows PowerShell Team blog at: http://blogs.msdn.com/PowerShell
Visit the Windows PowerShell ScriptCenter at: http://www.microsoft.com/technet/scriptcenter/hubs/msh.mspx