assuming that the security administrators of the systems you want to run the script on haven't followed Microsoft's 'recommendations' and basically made powershell unusable on the systems due to random GPOs ;)

PS is 'okay' as a scripting language, but it's very frustrating how Microsoft's security defaults seem to be dead-set on ensuring you can't use scripts on systems without jumping through a bunch of hoops. I get how MS got to this conclusion that it needs to be locked down, but it makes me think twice about pumping out a script since I know I might need to walk my colleagues through how to actually run the damn thing depending on what the Security Admins decided to lock down that week.

Cross-platform? I guess technically it is...