No, because it changes one very important thing. It creates empathy.
Eugenics... It forces empathy on a person my manipulating their DNA, sounds like a form of homogenization to me. Synthesis fixes nothing, the synthetics vs organics debate the starchild brings up insist about racism it is about perspective. The only time synthetics become a problem is when they start to humanize, when they realize their humanity, they in effect become slaves, yet the organics will treat them the same.
This will not change because of synthesis unless the change FORCES people to be ok with their creations becoming more then what they want, which means control. That said, what the kid is suggesting doesn't even make sense, unless it is a form of indoctrination, since that green stuff was the same thing essentially, that TIM used to turn those people into husks. If all organics have synthetics in them then that means that someone somewhere programmed these synthetic parts with information, and that information that was put in it could have all sorts of "commands".
There is 0 reason to assume what you did made things better. Al lwe have is a picture of Joker and EDI showing affection...but this was already happening, since EDI already publicly admitted to giving Joker a kiss for good luck. We have no idea what synthesis does outside of the reapers stop attacking earth and normandy lands on a planet.