Panzer wrote:A 4++ on a two wound model is great...if they actually had weapons to be a threat without having to take ATS.
I think the point Deathboon is trying to express is that to a knowledgeable opponent their threat level is more due to their homing beacon than their weapons as long as there is a suitably threatening unit in reserve to call in.
Also, them being smite magnets might not be a horrible thing. The 18 inch range of Smite means those nasty psykers are going to be relatively close to begin with. With careful positioning you may be able to call in a Anti-Infantry Crisis Team to target their bubble wrap. With even better positioning you may be able to target the character itself with that same Anti-Infantry Team.
Thinking farther, a unit of Sniper Drones would also serve great right behind a Stealth Team to threaten Psykers trying to come in for the Smite. That may turn into a pretty effective synergy.