Proposal: "DITA decoration catalog"

I don't think the base spec should include a starter decoration catalog.
I feel this is an end-user specific thing per their house style. Should
a particular SC see the need to create a starter catalog or "standard"
catalog for their needs (such as may be the case with the publishing SC)
I think that's fine. I'm just not convinced of the benefit in providing
one at the base spec level.

If the wider TC feels there's a need, I'll go with the flow.

/Gershon