I am about to design and build a new timberframe workshop.
Any ideas on effecient use of space inshop and storage outside would be appreciated.

how much floor space will the workshop be?
how much yard space do you have?
how will you be handling your timbers?

Length: For scarfing roof plates/purlins, think of the longest assembly you wish to produce. If you can't cover all, think of free access to allow the ends to stick out while working on such a joint, along with manoeuvrability to remove/manipulate the finished product.

I will require a floor space of at least 30' x 50'.
The yard is unlimited ( many acres) but topography limits
flat ground to about 2 acres.
Timbers will be handled by tractor, cart and rollers.
Thanks for the thoughts.

As far as timber manipulation, I have been using a flow through the shop system (in the front door , out the back door) Any comments on this would be appreciated.
Thanks

Can't comment further on through-flow manipulation; sounds efficient.

Exposition: my workshop is oriented south and open on this side also. There is a generous margin sheltered by the roof. Thus, I get winter sun at low angles, and shade in the summer.

I like the idea of a generous overhang (or even a roofed area) on the front(infeed side of shop). Possible temporary storage for uncut beams. I am tempted to face the broad side of the shop south due to the timing of my shop use. I am usually onsite during the hotter months.
Thanks again for your thoughts from France.

Dealing with the timbers that are not in the shop is always a concern, there is never enough quality space to store those timbers that are not yet cut, or are finished being cut.
A local timberworker has a great solution, a six posted storage shed with 10 foot overhangs that houses many timbers out of the weather. Some kind of permanent outside storage is a great advantage.