Originally Posted by
sabad66
Are you considering using a network file share now? The issues you mention in points 2 and 3 are non-existent with a quality solution like SharePoint... really you just set up a Document Library, permission it once and then all files inherit the permissions. If file owners leave the company, everyone still has access and can edit the docs if they already had Contribute permission. If not, a site admin can take control of the library and repermission it as needed.
Permissions can also be set up with groups. Define the groups once (for example "Management Team", "Accountants") and add the users, then apply them to the Doc Libs with the permissions you want the group to have.