Thinking more about it, I'm sure some decisions were made on a strategic basis to avoid having too many archetypes and keeping them separate enough.
I know that my Spy character was grumbling the other day about how the Spy doesn't get access to ALL the Driving schticks. I don't know specifically why each decision was made about that, but I'm sure the idea was just to keep the Spy from being the greatest at EVERYthing, and leave some driving specialties for the Highway Ronin and the Driver.
Maybe Laws just felt that the techie stuff might not be as much of a focus of the action-movie-style games this version of Feng Shui is geared towards.
Masked Avengers tend to be tech-oriented, and come with Fix-it 11 as well as Info: Science 15. If a player wanted to take that archetype but substitute in Bag full of Guns for Eagle Eye, I'd certainly allow it.
Another option is to take the Cyborg archetype and swap out all the schticks with gears on them (denoting a bodily change) for schticks that involve equipment instead (laser goggles, etc.)
From what I can tell the FM Nutball is the replacement for the Techie in the scheme of archetypes. If you wanted to revive the Techie proper, the easiest thing would probably be a mash-up of the Driver and the Nutball. For instance:
Guns 13 / MA 11 / Def 13 / Tgh 6 / For 7 / Spd 8
Driving 12 / Fix-It 15
2 Gun Schticks, 2 Driving Schticks, plus the old Techie's unique Schtick (possibly revamped)
1 gun, 1 car; Working Stiff
You could set whatever default schticks fit the Techie, but otherwise I think it's pretty close to the original w/o infringing too much on the source FS2 archetypes' turf.
The Techie, along with the Medic and the Journalist, were the bottom three least played archetypes in Feng Shui. We dropped them in favor of more iconic or interesting action movie archetypes, especially since many archetypes can already be used to portray those characters.
The archetypes are so varied & open that you can take one & skin it how you like. In some caes you can just change out some of the skills to match the PC you want. I find myself, while watching action TV shows like Arrow, Supernatural, & other, figuring out what archetype each character is. This little exercise will help me explain certain archetypes to new players.
I just picked up the Cypher System rulebook from Monte Cook Games, and for a fun one-shot, I'm having a go at adapting my table's FS2 characters into Cypher System characters.
So the Everyday Hero becomes a Lucky brawler who Never Says Die. The Swordsman becomes a Vengeful warrior who Masters Weaponry. The Archer becomes a Sharp-Eyed explorer who Carries a Quiver. And the Spy becomes a Charming explorer who Operates Undercover.
The idea is to do a one-shot that takes our characters out of their 'continuity' and plays something familiar but different--like a Saturday morning cartoon version of their gritty action movie storylines.