Okay, this is gonna be a long list:
1. Although there was more seriousness in that era, there was an air of casualness about them that used to make those episodes look very natural and close to life. They never used to exaggerate anything. Their dialogues and behavior used to be very natural and had a flow about it. Unlike nowadays where they have these particular catch phrases for each charactrer that they use in every episode (one eg: ACP - "kuch toh gadbad hai" lol)
2. I think the direction used to be much more superior back then. Somehow they used to keep an eye on every little detail, leaving no loopholes.
3. The acting used to be just fabulous even if it was a small side actor. The casting used to be just perfect.
4. The stories used to have a lot of variety in them. It was not always about someone killing someone and the CID investigating their dead bodies. What I mean to say is, they used to think out of the box and come up with stories other than the usual murder investigations.
5. Technology wasnt that advanced back then, and inspite of that they used to solve the cases very cleverly. Nowadays they just rely too much on technology to solve a case.
6. They never used to depend as much on forensic science as they do now.
7. Although they have made CID much glossier and stylish than it used to be, I feel in the old episodes there used to be a casual coolness about them that used to make them look naturally stylish. These days it looks like they are trying too hard to look cool.
8. There is too much of forced comedy these days. Sometimes it is so forced that it doesnt even seem funny. (Eg: Freddy promoting Indian Idol and Abhijeet - Tarika flirting)
9. Okay I know this is something very minor, but here goes: In that era the case titles used to be soo creative. You cant imagine what the story is going to be from the title. Nowadays, its just, "put the word 'khooni','laash','qatil','rahasya' in the title and be done with it"... (okay, okay I know this doesnt really matter, but just making a point people 😛 )
10. I think Asha is one of the reasons for the old episodes being so good... miss her
11. Somehow in those episodes the CID bureau and the investigation team used to look very lively. I'm sure most of you wont agree with me, but the bureau used to look very full although there were only 6 officers even back then. These days, inspite of there being 6 people in the team, plus Dr.Salunkhe and Tarika, it looks empty. Like something is missing. I dont know why I feel this way, but I'm guessing its because Vivek and Tasha are more like background posters than officers and Freddy is more like a comedian... 😒
12. And somehow, in those episodes they used to try and show a little bit of the teams' personal lives. Like the ACP's wife, Abhijeet's mom, Daya's brother, bhabhi, nephew, sister, Asha's mom, Salunkhe's niece and they even showed all of them going for an outing together to Sudhakar's house.... Nowadays it's as if they dont have a life away from CID. Okay I agree Abhijeet's mom is dead and ACP's wife is probably dead too.... but you know what I'm trying to say...
Okay this is my looong list 😆 I'll add some more points if anything else strikes my mind lol