Cpan modules are like free software, so I wouldn't say that any of them aren't good enough. I don't think programmers should waste their time perfecting a module as if it were a tool that they were paid to create. Once they create something useful, they should publish it, and if they want, they or others could improve it as they see fit, at their own convenience.
Developing a module or any software for hire is different. In that case, whoever is hiring you should give you the specifications, and maybe you would need to cut down on the unneeded features and excess file operations.