Simplify the shop, reduce storage space... use hand powered tools
It's a practical reality, in any case. But if you have a business case out of getting converts, good luck with that. I've mentioned them a few times here and folks get very defensive that the "only" way to do something is with power tools.

If you can track down the old tools mailing list (e-mail) (many web-links seem to have rotted, but it runs off a server at Cornell, last I recall - try here, it moved when I wasn't looking (quite a while, actually) http://swingleydev.com/archive/faq.html) you can find a bunch of folks that have the religion, and most current Windsor chair makers do.

In many cases I can do things faster (total time) with the hand tools if I'm making one of something. Additional benefits are that the entire shop fits in a smaller space than if you need room to push sticks through machines, and some things come out with a better quality of finish due to not having rotating cutter bits. But you have to be able to make your tools sharp...

Listening to music while working and having to work harder to cut body parts off are additional advantages.

I don't really see it as "back to basics and simplicity" but as "choosing the right tool for the job." One aspect that scares many folks away is that you may need to actually practice some before you can (say) make a pretty much 90 degree cut freehand (or whatever particular thing you're doing.) SO if you are only EVER making one of something, they probably are not faster (or you need to stick to a mitre-box, for that example.) There are certain things that cannot really be done the same way with power tools, though many have been adapted to methods that are more power-tool friendly. But some adapt poorly (thus the Windsor chair folks.)