I'd like to add my vote for this (
https://service.jiwa.com.au/browse/DEV-7994)
selfishly, with multiple customer databases on my development machine, it would be handy to be able to create a shortcut for each one.
But more generally, especially with integrated authentication, to be able to give users a 'Live' and 'Test' shortcut on their desktop would be quite helpful.
I've basically enabled this on my little external POS program; while it has an app.config file that it reads, you can also use the command line to specify the details. I went with four parameters of server, database, user, and password; with integrated authentication assumed if there is no username and password.
For Jiwa itself, you'd want to prompt for the credentials if the supplied ones don't work.