Oh I'm not a fan of the current Fading. Given that there aren't many Complex Forms and a technomancer doesn't use them all that much, I can see why they're so high. But with these modified rules, and the potential addition of several Complex Forms, I think it would make sense to do one of two things. Either we retcon the Fading codes, or we add an option for a technomancer equivalent to reagents. Personally, I prefer the second option - I feel like Complex Forms are rare and powerful things, but they shouldn't be crippling to a technomancer.
Look at it like this: a decker can do all the same Matrix Actions that a technomancer can do. They can use agents, which are similar (and yet completely different from) sprites. The thing that technomancers really have that is unique is the ability to use Complex Forms. Therefore, it makes sense to make Complex Forms powerful tools that really make the technomancer unique. So I am supportive of making Complex Forms very powerful, and with a high cost. However, the current Fading codes are a bit extreme in some cases, making the Fading enough of a penalty that they become a deterrent to using Complex Forms. I'm hardly suggesting we make Complex Forms able to be used every turn without cost, which is where I think a technomancer "reagent" would come in handy. A technomancer could use the "reagents" to set the limit, allowing them to use their Complex Forms at a lower Level.
What I would probably do with the Complex Form creation is to go with the current system of Fading values, but I might throw in a little something to act as a "reagent." I'm going to have to tweak a lot of stuff to make it balanced, but that's where the community here can really help - once I've got something written down, let's test things, run simulations and algorithms, and then see if we can get this whole thing well balanced.
Oh, and I had a VERY rough idea for a Domain: Math and Probability. Using advanced Resonance Algorithms (a new term I just made up wholecloth that implies mysticism) the Technomancer can predict the outcomes of certain events that are already in motion. The power that I'm thinking of is also EXTREMELY similar to Info Sortilege, but focuses on predicting outcomes rather than directing or giving the character a trove of information.
Also: updated the Defragmentation echo to reflect the correct verbiage for how the Living Persona takes damage. Since there is no such thing as "Living Persona damage" I've changed the echo to remove Stun damage caused via the Matrix. It can't be used for healing Fading damage, or damage caused by something not of the Matrix though. So a Stunbolt can't be healed, but a Data Spike can.