Steve, MBenzNL, had talked w/ SurfBlau about doing the autoup and down on his 190D (basically same system as our W124) but it was deemed to be too much effort for so little gain.
Becker radio thing.. mmmm just get a new deck, seriously, anything is better than what's already there!
- Keep antenna down when playing CD changer >> I 'd like that, especially when I play my XM radio!
- Good drink holders in W124 chassis, front and rear >> The almighty problem

Only thing so far, is the ghetto screwed in door flip down thingies.
- Replace W124 rear seat arm rest with W210 version which has drink holders (right?) Mmm you alreday have the armrest in the driver seat, and ...well...no, you can't.
- Install original type power rear sunshade by myself >> From what I gathered, you need to get a new rear deck. I got window tint, that does the job
- Rear door retracting sun shades >> I know there is something for the W202, but haven't seen any for the W124