Here is my Technomancer wish list, in order.
- I shouldn't have to spend 6 submersions to get 6 programs. Fix core. I don't care if the devs don't like it. Do it anyway, because at the end of the day what matters is what the customers want, and everyone here seems to agree that spending more than a hundred Karma just to get the 6 most useful programs is bullshit. TMs don't need every program, and I don't mind not being able to switch and swap; make the choices permanent if you must. What I do want are Wrapper, Lockdown, Signal Scrubber, Browse, Baby Monitor, and Fork and I shouldn't have to pay a minimum of 123 Karma for what a Decker can buy with 1160 Nuyen. Fix it.
- I want official clarification that Mind Over Machine gives you a free datajack as part of the benefits of a control rig. MMRI is crap, because what makes TMs crappy riggers is not the lack of a control rig, it's the fact that they can't slave drones to their living persona and therefore can't share programs with them. Take away the free datajack, and Mind Over Machine is completely worthless. Since MMRI doubles down on this, it already sucks and was a huge screw-up by the writers of Data Trails. Fix it.
- I actually don't mind the ridiculous Fading values as much as everyone else. What I do want though is something akin to a mage's reagents so I can increase the limit on a low-level Complex Form without wasting Edge.
That's actually it. Don't get me wrong, I agree with a lot of other points other folks have made in this thread, but I'm a realist and so I wanted to keep my list short and sweet, just focusing on the absolute must-haves as I see them. I understand that you don't want to go back to 4th edition where the balance of power is tilted in the opposite direction with Deckers being useless, and I think the above demands are both reasonable and feasible. Additional nice-to-haves would be paragons, streams, and small things like just clarifications on crucial TM strategies that some GMs don't want to play ball with like using Resonance Veil and Machine Sprites (but if I think a GM is an idiot I can always find another GM or run my own game, so that's less of a problem). Maybe add in additional types of Sprites if you're feeling ambitious, but deal with the more important stuff first.

Wow... that was quite the post, lemme tell ya. =)
1) Technomancers aren't Deckers, and if you're trying to play them like one, you're pretty much doing it wrong. Which is why you have to go pretty far out of your way to mimic Decker programs, which is what you're doing after all. You aren't running Programs, you're learning how to manipulate Resonance in order to get the same effect. I agree that Submerging is a heavy price to pay for a single Program, and it would be nice if you got like 3 at a time, or maybe call them Complex Forms that require at least Grade 1 Submergence before you can learn them.
2) Mind Over Machine was never supposed to give you a Datajack. How in the hell would it? You're an ordinary metahuman, whose mind can talk to machines. Where in that does it sound like you'll end up growing a data cable out of your neck or something? That's why they reprinted MMRI in Data Trails, it was meant to replace MoM completely, and clarify for those of you who seem to think taking the Echo would make you sprout a USB cord out your ear. The point is that when you take the Echo, you can mimic the functions of a Control Rig in regards to interfacing with drones. That's it. No strings attached (literally).
3) I can agree that Reagents would be nice, especially since any genuine use of Puppeteer (probably the most popular and powerful Form) is going to give you brain damage. Although the Matrix treats Force / Level of your Forms differently, since you don't really have AOE or any of that, digital Reagents would just be a legal means of skirting the rules, instead of relying on Edge like every TM ends up having to do to stay useful and alive at the same time.