Your question is a very good one. Most of the photos I see of equipped benches rarely have a set-up that's helpful to a good, smooth work flow. A sturdy fixed powder measure stand is VERY GOOD way to start!
I'll note that most of those who say loading with an electronic scale and/or digital powder dumpster is "faster" probably have their conventional tools poorly positioned for easy work. I've tried digital gear at friend's houses. With my present tool placement I find I would get very little benefit with all that stuff and do it at greater cost and MUCH lower durability.
First, let me say what to avoid; a press-mounted measure; mounted on the front edge of the bench; mounted a step or more away from the press; mounted where it eats a lot of open bench space. All of that is awkward and slow to deal with and/or eats more working space than it should.
Find your own 'best' location. Start by standing at your press in your normal working position, leaning your body against the front edge of the bench and just a bit away from the press so you'll have sufficent arm freedom to work the measure. With your measure fixed in a stand, shift it around with your so you can easily reach the measure's lever without moving. That will likely position it about 12'-14" back from the bench front for most right handers and just a few inches to the left of the press. Position the stand base immediately behind the press, tuning/angling it so you can have the measure handle placed where you want it and the stand itself won't interfer with your use of the rest of the bench top. Test mount it with wood screws until you decide if that's exactly what you want before you mount it permanently. (You can easily fill excess holes in the bench with epoxy.)
Next, with the measure in place, make a convienent place for your beam scale and powder trickler. Build a sturdy shelf, wide enough to position the scale within easy reach of the measure, where it will be easy to reach and read too. For very easy reading, place it so the scale's beam is about chin high. (I prefer a wall mounted shelf to prevent bench vibration/shake from interfering with the scale.) Put your powder trickler between the measure and scale pan. Test your work flow and make refinements until you get it all exactly where you want it before mounting anything permanantly.
Properly arranged, you will be able to stand at the press and do your loading work easily. Easy is quick. You will have open bench space for loading blocks and bullet boxers between the measure and bench front, immediately to the working side of your press, allowing for very smooth work flow without wasting time fumbling and moving around. You can smoothly drop charges directly into cases held in a loading block OR measure/weigh each charge and pour them through a powder funnel before seating, all without taking a step.
