Apologies if this is a repost - I recall asking this a long time ago somewhere, but I can't find that thread anywhere. So, basically, everything that a System rating does is done by something else for a technomancer. Don't believe me? I don't blame you, so lets go to the books. All quotes are from SR4A:
System limits the rating of programs running on the device, and sets the limit on most devices for the number of programs that can be run without a Response drop.
. . .
System also sets the size of the Matrix Condition Monitor of persona
programs running on the device
...technomancers do not have a separate Matrix Condition Monitor. Instead, they use their own Stun and Physical Condition Monitors. Matrix damage is treated as Stun damage to a technomancer.
. . .
Any number of a technomancer’s complex forms can be used without affecting Response.
A complex form’s base rating may not exceed the technomancer’s Resonance.
So, this brings to mind a two questions:
1. If Technomancers don't have a matrix condition monitor, all of their CFs can be running at once, and their complex forms have a max rating based on resonance, what does System do for a Technomancer?
2. Are Complex Forms limited in rating by BOTH Response AND System? This could be inferred from the way things are worded, but it seems kind of harsh.