Technomancer Stat Effect, Do they do much? Options

[JoelHalpern]

Reading the Technomance Persona descriptions, I am trying to figure out what the net effect of the stats is.
This is driven by the fact that Complex Forms are not limitted by System.
You can run as many Complex Forms as you want.
The complexity of your complex forms is limited by your Resonance.

So what do System and Response do for a Technomancer?

System seems to still limit the number of places the technomancer can be simultaneously.
And Response (Initiative) still factors into when he acts in cyber-combat.

Does Response limit the effective level of complex forms? (I don't thinks so, since if it did Threading would not be very useful.)

Are there other uses I have missed?

Thank you,
Joel M. Halpern