setCustomParameter for light

[gamedboy]

Hi, I am hoping Ogre can have a setCustomParameter for lights. This will allow a lot of interesting effects eg.

for PCSS, it can be use for light size factor
it allow a usage of a texture atlas for projector light
it allow more flexible lighting models, eg bidirectional light, or trilight in this paper http://home.comcast.net/~tom_forsyth/pa ... light.html
custom light attenuation, etc