I voted for an equal balance of both crime and character development. Balance is always good, and I think if all the three shows were able to find that balance, we wouldn't have to roll our eyes at some of their storylines.
The crime is the base of the franchise. I wouldn't be watching it for all these seasons if the crime storylines hadn't caught my attention in the beginning. The lab tecniques, the forensic science, the criminal behaviour, etc are interesting, and it wouldn't be CSI if that wasn't there.
But at the same time, as you keep watching those characters for years, you want to know more about them. You want to find out why they act the way they do, what in their background makes them who they are. Because if you only want to discover the crime scene, you can turn to Discovery Channel and watch their documentaries. But I feel like CSI has to be more than that to run on air for such long time.
Especifically, I always thought CSI was the most loyal to the crime-based storyline idea of the three. It was more focused on that from the beginning, starting to explore their characters slower and in a sensible way. As we progressed, they have changed that just a little bit, but I still feel like they have an ok balance, maybe even more crime related than not.
CSI:NY has, in my opinion, always had a great balance. I like how they seem to focus on the characters a bit more than CSI, yet they don't go too far with it. They do have character development episodes, but I feel like it's done in an interesting way.
I'm ok with both of them, and definitely interested in watching. But...
CSI:Miami has always been the closest to soap-opera one. In the first 3 seasons, perhaps even on the 4th, it wasn't as blunt, it was a different style from CSI, yet still convincing as a crime show. But now, honestly, the show has lost something, or maybe added too much of something else. It seems like the writers need to get back on track and find that balance that is certainly missing. And especially, I feel like the lack of continuity, adding to their not-far-from-ridiculous-whoa! storylines, reflect themselves on my interest for the show.
^And that makes me want to scream for some more crime on Miami, and leave the guys alone for a while. Let them have a simple day doing their job, no worries other than finding a matching DNA. And then once in a while, go deeper in their feelings, so that there is a good balance in the end.