I'd probably like to see powershell usage increase too, but I think we may be in the minority. Every time it comes up I check to see if it is available in Debian and see that the packaging bug¹ has been open for years without anyone caring enough to move on it. The referenced upstream bug² points out that it isn't capital-F Free enough to distribute [yet], but you'd expect more comments in the bug if people were pushing(or a package for the non-free section).