Ok, I know I suggested that myself some page ago, as did others, but the more I think about it, the less an Echo to reduce Essence cost seems appropriate.
There's an Adept way specializing on tech, and if want that tech inside you, you still have to pay.
Having the TM increase the function of the gear, however, remains attractive.
If the Echo for Skillwires returns, maybe allow the
option to add it's level to the rating of existing skillwires, if present, instead of granting them themselves?
This would actually allow a TM to get skill wires above level 6, should he sacrifice essence, submerge, and probably get another echo to raise the effect of the skillsofts plain not available in that rating. Don't tell me that's OP. ^^
As for improving one's own Cyberarm, maybe just a Complex Form that lasts a specific duration and takes the "redline" rules from arsenal, minus the damage to the ware.
Could last longer or give bonus dice if it's the TMs own gear.
Edit: I was reading through the FAQ thread of this very forum to find clarification for the issue
here (some clarification in a TM-centric book might
not hurt), and I found just using the print function top right and serching for "Technomancer" provides a trove of information on the problems people have with the 'class'.