Need GM Help, Too Much Variety A Bad Thing? Options

[SamVDW]

My first Shadowrun campaign in 4th Edition ended a few months ago. The group was very combat-heavy and had little versitility, but they were able to muscle their way through adventures and everyone had a good time.

The second campaign just started a few weeks ago and we have a Street Samurai, Rigger, Technomancer, and Shaman in the group. The Street Samurai wants to solve things with brute force. The Rigger tends to want to survey the area and sneak around. The Shaman is often laying in the back of a car zooming around astral space. And the Technomancer sometimes won't even leave the house on parts of missions (because he doesn't want to die), he just runs through the Matrix doing stuff.

There is almost no group cohesion. As a GM, I could use suggestions on how to keep the group together, and still let them all shine in their respective elements.