Another suggestion:
More control of trace/space in the DRC. Every board house I have worked
with has different limitations on widths for copper and widths for silk
screen. They have different spacing tolerances on inner and outer layers.
Lastly: how about an effort to work with or for the board houses to
provide DRC's that are precisely in-line with the exact same checks they
will do. This will severely lower costs industry-wide. I'm tired of
trying to get EAGLE's DRC to match up to different houses only to find
out they went and auto-corrected some 4000 miniscule errors in my silk
screen widths or something else ridiculous.
-jh