The return of entechment/ sealing sentients' spirits in technology?

I was thinking today about The Truce at Bakura and how the aliens had developed the entechment process, wherein a sentient's force aura/spirit was captured and made to man droid fighters. This was a pretty interesting development, and I have to say that I'm surprised that it hasn't really been revisited.

I could totally see the Sith using this process to subjugate souls and develop them into smarter, faster war machines.

What say the rest of you?

http://starwars.wikia.com/wiki/Entechment

 

I'm not really interested in that versus a Short Story done about Jaina Solo that involved entechment.

Basically, people using it to gain Immortality via Human Replica Droids.