Idk if all the pref settings are stored in the registry, text file, or whatever, But I think it would be possable, "even if the format changes" for the update to scan for the current preferences and apply them to the new install.
It wouldnt be a big deal if the updates were not often, But they are.
Every time we download updates "if we remember to" we need to go and setup all the options again.
Yes I want Anisotropic Filtering
Yes I want Local Lighting
Yes I want Shadows
NO I dont want to disable Far clip
Yes I want shiney and bump mapped and cloth and terrain detail to some, gamma to 0.90 Run in a window, Object detail full, Tree detail NONE, Avatar full, avatar vertex OFF, av in mouselook YES, Draw distance 64, fog 4, Drop Draw 15, Bump Draw Distance 64, particle count 512, outfit comp 10, Network 1000, Disk Cache Size 200,
Automatic Edit Camera Movement OFF for god sake O F F.,
Automatic Appearance Camera Movement OFF for god sake O F F.,
Camera Springiness 0.
Show names Temp, Hide My Name,
Close chat after hitting return.
NO on arrow keys move av when chatting.