I've done this a bit for a diversion, nothing real serious. Here's what has worked OK (again, talking 1400 rating here) for me.

Charging in early and blowing a quick 3xEM+NS+CL plus Shock combo. Then following it up with spammed LB volleys. This is very offensive, totally counter to a good 5v5 strategy, but it helps to take them off guard. Almost all my wins have come from just barreling in and taking out someone early.