Just wanted to bump this up again as it's been out of sight for a while.

It's worth noting that this system is very good for melee classes. I use it with 5 paladins and mashing the 'follow+assist' key keeps the melee followers nice and tight on mobs. It even works well for PVP as I managed to defeat a 77 rogue with my 67 paladin team the other day (although there were 3 deaths in my team)