While I know it would require a bit of a UI overall for the queues, it’d be super awesome if the devs could make it possible for us to queue for multiple instances all at once then allow matchmaking to resolve which we get into.
I played DCUO for a while and they used that system very effectively. Basically, the queue menu had every possible instance, both PVE and PVP, tabulated in a nice organized window with separate menus for different types of content. Every Mission/Op/PVP Mode/Map has a check box next to it. You tick all the boxes of all the instances you’d like to queue then hit the master queue button and the system puts you in the first that’s full that satisfies your request.