I'm generally totally open to particle feature requests or ideas and I've now added a 'smaller things todo' and 'interesting ideas' lists on the side panel for you guys to get a better idea of all particle things I'm thinking about.
I think the best way for me to get your requests is by commenting here on my blog. I can't quarantee any requests will make it on to the todo lists, but I will give serious thought to every request I get. That being said I hope to receive quality requests with a clear explanation of what the wanted feature is, example of possible workflow and some reference links if possible. All "AddFeatureXCauseIt'sReallyCool!!" type requests will unfortunately be totally ignored :).
P.S. To all those of you hungry for info on nodes progress: I've gotten very basic emission working to a simple (non mesh) cube shape, but will halt further development untill I've checked more on how other software (like houdini suggested by genscher) handle things.