IMO the writers of the CSI shows have the cast divided in leads and secondary characters(and I am not saying it is right).Mac and Stella on NY and Eric,Horatio and Calleigh on Miami to put an exemple.Vegas is a case that someone can step in like Nick and Jesse may be the case of someone demoted.
That said,I have seen an effort recently to improve things.Ryan has a storyline and I have seen more of Natalia recently.And I do believe the last few cases are way better then the rest.Let's hope they keep listening to us.
Just a question,is the serial killer storyline related to the stolen diamonds? Becouse if not,I guess Ryan issues should be resolved tomorrow.