Things I would change if could (in no particular order):
-Wind noise: my solution lies in the volume control on the stereo.
-Sunroof:after a final self-induced mullering of the winding mechanism mine is wedged shut with blocks of wood and sealed with sillicone to keep rain out. It still rattles!
-Water geting into electric window motors: mine were a right mess when I got the car. Took ages to sort out, they now work but sound like a chainsaw!
-I agree about foglight / rear demist switches being hidden by steering wheel.
-Boot should be included in central locking, or at least on the same key as everything else.
-Rear wiper could do with an intermittant wipe setting. Spray from a wet road is not dense enough to need the wiper on constantly.
-The bolts which connect the gearbox to the torque tube!! Why-oh-why did they have to use those pesky 'allen key' type bolts?? Mine have rounded inside so I can't get the gearbox out, which means I can't get the tube off so I can't do the clutch! Grrr.
-Purely for looks it could do with bigger wheels and a wider track.
-Driving position is very good but would benifit frm a centre armrest between the front seats.
-Headlights: p*sspoor, even for a car that age. I installed 80/100w bulbs but they're still bad, so I recently added driving lights to at least help the high-beam. And I agree about flashing the lights during the day, if you loose count of how many times you flashed it's easy to switch straight onto high-beam when you put the lights on. Does not impress drivers in front.
-Original stereo was not that good, but I suppose about average for the mid 80s. I agree about the front speaker grilles falling off. Superglue to the rescue...
Well, that about settles it. Quite a long list, but for a car that old, not too bad really. Most of it really minor things, and the list of what I like about the old beast is much longer...
Cheers