I'm actually starting to warm up to the Stormsurge. After reading the most recent White Dwarf, I see some good potential for it with the Pulse Blast Cannon (I'm thinking we should just call this the Pulse shotgun).
Rather than using the stabilizers and giving up mobility, I see using a unit of two or three Stormsurges aggressively. As GCs they can keep up with the rest of our army just fine and so set them to hunting enemy super heavies and GCs, or if none available vehicles and MCs. The nice thing is that again as a GC, the Stormsurge can use the rest of its many weapons to harass nearby infantry. That's a large amount of fire coming from the cluster rocket system and SMS. I'd even say in this role it would be worth upgrading to the twin-linked AFP for more great anti infantry.
And, if there aren't any SHs, GC, MCs, or vehicles to target just keep farther back from infantry you want to disappear and use the main guns large blast.
Even one Stormsurge by itself used this way can put out a lot of firepower and is fairly survivable given its number of wounds.
So what do others think of using the Stormsurge this way?