Jamaica Request Mapper

I'm beginning to organize first thoughts on a request mapper for 
Jamaica. The general idea is that it should (of course) build on the 
class(es) already present in the code base and implement (at least) the 
Front Controller pattern. This is less far-fetched than one would think 
at first glance: Xaraya, in particular Jamaica, already looks somewhat 
like a form of MVC.

Any thoughts/ideas on this?