(Feature Request) New Plugin Allowing For More Options In Usernames

It would be great if WPMUDEV would create a plugin that allows for usernames to use capital letters, some special characters - etc.

I've been looking for a plugin that will do this and none work correctly. I'm not the only one looking either. There are posts scattered all over hoping to do the same thing.

(Side Note: Having this ability was also the very first thing asked about by a member after I opened my site.)

Thanks for any consideration and +1's =)

~ Corey