Feature Request: Drop down menu for OAuth2 Plugin at Client Sign-In

[qyak]

Our instance of OSTicket has multiple domains for users to log in to (7 to be exact). I had to make them internal Google Apps so that only those with emails matching those domains can have a one click sign on, and not those from the outside world. This is what it looks like now:

I think a drop-down list would be great feature!