1.)You will need to do this for each group you wish to allow.
Control Panel » Group Management » Site Permissions
Can upload an avatar set to 1. There also are other settings that you may consider while you are there.
2.) This is not a feature that supports more than one island in the center.
You can try Control Panel » Forum Settings » Edit Forum-Custom Inserts
3.) No it is what it is. Utill we have a new editor.
4.) there are several users here that do just that. Somebody will chime in.
