Hide Administrator account and also Permissions Filter

This is brilliant! It's almost exactly what I needed for a project I am working on for a local school but there are two issues that prevent me from using it on a production site...

1. Firstly and most importantly, the administrator account is accessible! Which means the 'Editor' role (has permissions to assign roles) can edit the administrator account and change the password, email address etc.

2. Secondly, the filters on the /admin/people/ page have the following options:
"show only users where permission"
- Role
- Permission
- Status

Is there a way of hiding the 'Permission' option so that the 'editor' user can't see a list of all the permissions on the system?

If so this would make this one of the most useful module I've come across!