Need help with a plugin system

[eluser]Yorick Peterse[/eluser]
[quote author="xwero" date="1242066180"]Changing the output results and replacing things are two things that are not basic

If a plugin has to change output result it needs to know which model methods are used by the controller method and needs to know how it can change the model method to get another result. The latter is the most difficult as it's usual to hardcode this in the controller method.
If the plugin has to replace things it need to know in what order the views are called and then there must be a way to change it.

In short the plugin needs to hook in your controller code on a deeper level than executing plugins before everything else runs. What you are describing is possible in a tightly controlled environment, for example a CMS.

So now the question is do you want to create plugin functionality for a thightly controlled environment or do you want to create plugin functionality developers can use in the open environment that CI is?[/quote]

I wanted to make a plugin library that would extend CI's plugin system, thus giving more possibilities without having to do a lot of extra work. Considering the difficulty of it I might drop the idea though.