Hello @cmeister and welcome to the OHDSI community!
Completely agree 
Currently, the OHDSI community is hosting a Collab-a-thon to clean up the CDM and Themis documentation. The Cost table is slated for work starting in a couple of weeks. My first link contains information about the April Olympians Collab-a-thon and a link to sign up. You will learn a lot about the OMOP CDM and conventions by participating in this endeavor.
The Collab-a-thon work is on ratified conventions. All proposed changes to the CDM rules or requirements should start as a CDM GitHub issue and any proposed changes to the conventions on how to insert data in CDM should start as a CDM Themis issue.