I can't believe how handy this plugin is. It really needs to be integrated into the WordPress core. Thank you very much for tackling this long standing issue.
I do have a feature request. I had been researching role management and I had come across the Groups plugin which is slightly different than traditional roles and gives you different capabilities. I was wondering if there would be any chance you would be able to add support for menu access based on Groups as well. I know its non standard but it would allow for even more menu access control.
Thank you for your consideration. Here is the plugin: