I like the height of these beds.  Would make for easy lawn care right up to the bed, as well as less bending over to harvest.
This thread has got me excited about improving our first crack at a garden, and I plan to build some this fall or spring once it cools off a little bit.  In doing so, it's got me questioning a few things.  Perhaps you can help:
1.  Do you put any kind of barrier down on the bottom to first kill weeds and then prevent them from working into the bed?  Or does the depth of those beds take care of that issue?  It sounds like some folks plop cardboard down in there.
2.  Speaking of depth, is that all soil, top to bottom?  I read one quick little thing about people alternating soil with other substrates like cardboard and wood chips.  I should have quite a bit of semi decomposed hay (current garden is hay bail garden) as well as a bunch of dead / dying veggies and other organic material soon.  Plus I may start composting the pine shavings out of my chicken coop.
3.  Do you worry about bed orientation?  It seems line in N. America for high-sun plants, you'd want to run the beds W/E so that as the sun got up just a little ways, most of the plants would have sunlight for the majority of the day.  Then for plants that want a little bit of shade, run them N/S so one half gets it for half the day, and the other for the next half.
4.  Materials... I'm all about doing things right the first time and being as hassle free as possible going forward.  Would modern day ground contact treated pine last quite a while?  Or are organic folks going to claim that this isn't safe / healthy?  I want it to be nice, but framing with cedar seems a bit silly.  I think with the new stuff I'd just risk it.  I'm thinking that and then t-posts with cattle panels for trellises.
5.  What's the go-to watering system?  Right now I have a hose that just kinda seeps about its entire length.  It's just laid on top of the hay bails and works fine.
I really like the bed idea.  I guess you can also fertilize and adjust PH for each individual bed according to what's going in.
Pretty good introductory ready I just came across.  
https://journeywithjill.net/gardening/2018/02/13/7-common-mistakes-in-raised-bed-gardening/
She also has a free soil composition guide if you want to provide an email address.  
https://journeywithjill.lpages.co/raised-bed-soil-options/
Like everything else, I'm sure this can be as simple or as complex as the gardener chooses, but considering what the entire project will cost in total time, a few hours of research to avoid some of the pitfalls sure can't hurt.  I went into the chicken coop building process blind, and looking back, I probably should have bought (or at least drawn up) some plans.  A little research would have also shed light on some tricks that would have saved a lot of time.