Any community driven extensions?

[eluser]xwero[/eluser]
If you find a bug you can report it in the library topic or create one yourself.

If you want to extend a library you can put it in the system/libraries directory and than you are able to extend the library like you can do for the CI libraries. It's hackish because the CI libraries don't have prefixed file names, something i would like to see for several reasons, so you have to be careful not to overwrite a CI library.

If the author changes the library and you can't use any of the changes you have the choice not to update, it's not windows

There is no one who is going to stop you from writing your own libraries but if you find a library that fits the needs of your project why not use it. A library you create you have to test all on your own, a library found in the forum is probably used an tested by a group of developers so bugs will be squashed by the time you come around.