Nice starter list. Here's more, off the top of my head:

  - failure to lock rows with pessimistic locking
  - failure to consider optimistic locking when viable
  - data sets within a table (undernormalization)
  - too much duplicate app code that should be stored procedure
  - overuse of stored procedures that should be in app code
  - appending with insert
  - appending to datasets with variable length
  - "smart" keys that can never be changed without rewriting
  - underuse of indexing to slow read performance
  - overuse of indexing to slow update performance
  - records too big for good hashing (undernormalization)
  - columns with different typed data (when DBMS allows)
  - columns with different logical data (app driven)
  - enhancing by inserting columns instead of appending
  - poor or missing audits
  - poor or missing security
  - poor or missing archiving