Thank you very much for the responses everyone. I apologize, I should have been more specific. I have been reading the various league rules with regards to length and blade requirements, but I was hoping for more details on some of the more vague details, for example.
(from Saber Legion)
❖All saber hilts and blades must be inspected and approved by the Tournament Director, gear inspector and or event coordinator. The Official Tournament Director always has final say.
❖Saber hilts and blades must consist of parts from approved saber manufacturers or otherwise be approved by the gear inspection staff.
❖Homemade hilts or parts cannot be used without approval of the gear inspection staff as they have not been tested and may place Members in danger.
I know this is a case-by case thing, so if there aren't any concrete answers, I understand. I just want to do everything I can to make sure my custom will pass inspection.