What late model accessories do you wish your old car had?

The very first thing I did was swap the heat-only firewall to an AC firewall before anything else was done - gotta have AC in my old age!. I’m in the process of modifying both my window winders to accept power window motors- thanks @66Dvert . Will also add power door locks - thanks @TrailBeast . Inside I will be adding Dakota Digital modules to allow the interior courtesy lights to just fade away, turn the headlights off up to 30 seconds after turning the ignition off and turn off any chosen accessories with the ignition off when either door is opened. Safety-wise, I’m adding amber turn signals in the back where the backup lights used to be and will add an unobtrusive third brake light up above the rear power window. The interior is getting 66 Barracuda front buckets and rear fold down seat. No big deal except the driver’s Bucket will have a power lumbar conversion for my aching back and both seats are getting a heated seat conversion for those cold frosty morning when we go get something to eat (yes, when done I want it to be my daily driver!). Finally, 4 wheel disc brakes - front 73-76 A Body the rear 94-04 Mustang- based discs with caliper adapters and related hardware supplied by @dodgedifferent2 - thanks for all your help!
That's a great list for safety and comfort. Love the lumbar support idea. I hear ya there!