Lots of good comments already. My two penneth worth having completed a new workshop about a year ago, is that however much time and thought you spend planning the layout, you are bound to want to change at least some of it, I have 3 or 4 fresh cleat rails pretty much all round, mostly above worktop height, but lower down where appropriate. the only thing that is fixed directly to a wall is a CamVac. Various holders hanging on the french cleats are all task/machine specific. E.g. the grinding jigs hang near the Tormec. All drilling bits are near th pillar drill. Likewise there is a sanding station, a polishing station, and so on. Any machine and all its gubbins can easily be moved, temporarily or long term.