The following will be likely the last feature incorporated to Custom Write Panel before the plugin enters beta phase.
In WordPress, a user could be assigned a role and, accordingly, that user will or will not have the capability to write a new Post.
With this upcoming new feature, a custom write panel could be accessible to certain roles only. For example, a custom write panel “Music Review” is created and a role “Music Review Writer” is invented. This custom write panel could be set to be visible to this new role only.
To accomplish this, another plugin needs to be installed in conjunction with Custom Write Panel, and that plugin would be “Role Manager.” Custom Write Panel will be responsible for creating a new capability as a custom write panel is created. Role Manager will allow adding that capability to an existing or a new role.