AOP & Pointcuts

I am asking this question of the general community to get a feel if anyone would be interested in this feature.

I came from a background of Java-Spring-AOP.  One specific feature I would see as a great addition to the framework would be the implementation of Pointcuts.

http://en.wikipedia.org/wiki/Pointcut

I would like to get comments on how this could be done and the best way to to it.  I have read over this article on how someone implemented it in CI (http://www.sitepoint.com/explore-aspect-...igniter-1/).  But would like to pose that we do something like this more permanent. 

Is hooks the best way to do this?  Is there a better way?  It is worth suggesting this to be put into core at some point?

Does any other PHP framework have this?

I personally will implement this in my own projects soon but wanted to try and do something that would benefit CI in general.

Thanks

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