Another option is if you have an LLC or other entity and can register your NFA items too that entity. Like the trust you don't need the CLEO signature. Unlike the trust you also wont need fingerprints or pictures. People also claim the approval process is faster since there is less paperwork. I'm not sure you could prove or disprove that.
All you send are
2 Copies of your Form 1 or 4 (printed double sided)
1 Certificate of compliance
1 Copy of Articles of Organization for your LLC
1 Check for $200 made out to Department of Treasury