[Usability] cmyk colour profile

[David Christian Berg <david sipsolutions net>]

Hey guys,

I've been thinking about his for quite a while and still believe it
would be a good idea to implement:
I'm doing quite some desktop publishing stuff and I'm trying to stick to
the gnome-desktop as much as possible. Unfortunately GIMP fails to
support CMYK natively and Inkscape doesn't either (SVG Print doesn't
exist yet, though).
However, a great step towards allowing better dtp on gnome machines
would be to have a global cmyk setting that any program wanting to
display cmyk-values on screen would call. Spot colors like HKS or
Pantone would first be converted to their cmyk-equivalent (this is just
maths) and then the cmyk global profile would be applied.
The setting would be a dialogue which asks you to adjust an rgb slider
until the representation on screen best fits the cyan, magenta and
yellow of printing. These printing colours can be found on basically all
packaging (for example boxes for frozen pizza).
Real professionals can ask their print shop for a sample and have the
option to insert other colours than just C100M0Y0K0 and so on...
Out of all the entered value the piece of software will derive a
function to translate cmyk to rgb. This is the black box about it...

Anyone to agree that this is good idea? Anyone to disagree?

Hope to have risen a point that has not yet been discussed.

David