Well, part of the original problem with riggers is their hardware and skillset were killing the PC's playability.
you have to deticate 5 essence, and all of your skills to driving.
most of them weren't any better with a gun than the decker.
bouth archtypes were effectivly retarded for the core of actually 'running'
sure, if you went with drones, you could have a little robot in your place to talk to the other players while you sat in the car; but the robot was virtually skill-less; and unless you put some serious hardware (read $) into it, it wouldn't help much in the stand-up fights that teams seem to get into.
so, they made the technology more accesable. the street-sam can have a data-jack, and a decent car skill, and pull off a decent rigger. (or, on the flip-side, the rigger has enough essence left over after saving the 5 essence and money from a level 3 VCR that he can get a couple of decent cars, some supportive hardware, and end up holding his own in a fight.
or, if you want to play total support, you can make your decker drive. it's really only one more skill anyways, and the skill line between deckers and riggers was pretty transparent anyways.
-RuskiFace the Pirate