I am looking for an addon that can give me the options of things that would be able to only allow members to add or create signatures and also be able to post OUTBOUND links until after so many posts or a time period. Also not sure if could integrate a user upgrade option to allow this as well.
If you have your usergroups set up so all members are Registered with very minimal permissions (as recommended) under General Permissions make Edit Signature green/ Allow. On Guests/ Unreg make this red/ NO.
Then add the user upgrade to posting links on top of the standard Reg group.