Well I have had so many ideas pop up so I may aswell share them with you.
I have been on many sites as Staff/Member and had my own site on many occasions.
And for the safety I think it would be a good idea as a member to not be able to delete/lock their own topic.
Mainly because if they are breaking the rules and someone reports the topic they can delete it without staff knowing.
I just think its good for safety but maybe the staff may think differently.
Thanks,
John