Toad currently uses the set sql_trace function in the SQL Editor for tracing and it is not possible to customize this level.
Development have confirmed that the next version of Toad for Oracle will use "set events" instead of "set sql_trace", to include waits and binds. e.g. set events '10046 trace name context forever, level 12'.
WORKAROUND
None.
STATUS
Waiting for fix in a future release of Toad for Oracle.