I know what you mean. S3 Ryan was adorable but he was new, a little bit over-enthusiastic trying to fit in and impress the team and rather geeky. All lovely of course but I suppose he is becoming a tougher, harder, more experienced CSI and his look has evolved to match that. I'm in the UK and only just watching the start of S5 but know that he ends up off the team. I really hope that in S6 he gets back into the team quickly and gets to prove himself again. The tougher-looking Ryan would suit some good action scenes out of the lab I think. Delko has the diving thing which suits him really well and Calleigh has her guns. I think Ryan needs something specific for him that allows him to shine for the team. He's a good CSI and needs to be given a story that keeps him in the limelight but out of trouble for once!