RESOLUTION

See if this rule works.
If we create the table below:
CREATE TABLE za_testRulesTableNameLooooooooooooooooooooooooooooong
(
col1 NUMBER,
col2 NUMBER
)
We get this:

Once we short the name of the table, rule 7001 should disappear:

STATUS
This rule has been added in Toad for Oracle 13.0 as Rule 2142 ("Table names should be under N characters.") .The latest version of Toad for Oracle can be downloaded here
You can create rules in the 7000 - 9999 range. This range is reserved for customer usage, and Quest will never write or overwrite anything there.