Having XV8s as troops is a blessing as far as I'm concerned, though if you're not careful they can start to get stupidly expensive. So how do you get them to work? I've thought about it and I've settled on burst cannons, here's why...
I asked myself: What are troop choices for?
A: Securing objectives
Unless you're planning to simply table your opponent every game (Death Company!) your troops are generally going to win you the match by securing those objectives and their corresponding victory points. To do this, troops need to be durable but still be able to deal some damage. This is why tactical squads are to my mind one of the best troop choices in 40k. So I asked myself, how can I get my XV8s to function like tactical squads?