Remote Control utility, and control pool Options

[Moon-Hawk]

Okay, bear with me while I set this up:
The Remote Control utility is necessary (along with a rigger protocol emulation module) for a decker to talk to drones or CCSS. Of course, the decker cannot use Hacking or Control pool to control drones in captain's chair, which is all they can manage. R3r states that to take over a CCSS network a decker needs "a system control rig emulator(pg.95), a protocol emulation module(p.98), and a remote control utility(pg 73, Matrix)." Just under that it mentions that the decker gets a Control Pool equal to have of "his emulation utility's rating". I assume that the emulation utility is the Remove Control utility, and control pool can be used in the "Defeat Controlling Rigger in Rigger Combat" section.
So my question is (finally) what is the Remote Control utility good for. Is providing Control Pool really all that it does? What else is Control Pool good for? (for a decker who can only control drones in captain's chair) Do I really need a Remote Control utility at all, or does foregoing one just mean no control pool? Thanks.

ref:
Remote Control (Matrix pg. 73)
Accessing A Security System (R3r pg. 49&50)