Database Software

So, I think this works - still in the process of testing - but what I want to do is the following:

1) Export ONLY users, passwords, and privs from TEST
2) Clone PROD --> TEST
3) Drop all users in TEST excluding system users.
4) Import original users file from Step 1.

I think I've got it with the following. Am I missing anything? I'm testing, but if someone else has done this, I would be happy to hear from something I may be missing.

JOB_NAME=EXPDP_USERS
DIRECTORY=DTPUMP
REUSE_DUMPFILES=Y
FULL=Y
DUMPFILE=users_test.dmp
LOGFILE=users_test_expdp.log
INCLUDE=SCHEMA:"IN (SELECT USERNAME FROM dba_users where default_tablespace NOT in('SYSAUX','SYSTEM'))",ROLE,USER,SYSTEM_GRANT,ROLE_GRANT,DEFAULT_ROLE,TABLESPACE_QUOTA