For those picking things apart here, you've made as assumption that the marketing photos you have seen, of uncertain age, are indicative of everything they do. Have YOU done everything the same way, exactly, forever? I think not.
I do know that "CAD" is unavailable in Europe, period. Not discussable. If anyone is doing it, they are violating EU rules.
Hoses? Most everyone sources these pre-made from a number of people, and to even think that a hose you get today from MB is 100% exactly the same as one you bought 50 years ago is a fantasy.
Wrong finishes on a FI pump? There is no finish on my FI pump. It's raw. Some of the relays and such on the pump have finishes on them, and yes in the photo shown, they are black. That's incorrect. So's the oil filter canister in the photo.
What makes one think that the partially disassemble engine in the photo, is fully complete? To judge used vs new pistons should be made not from a marketing photo, but from the contract one has with whoever is doing your work, wouldn't you say?
I could go on just as other have--but there are, on a daily basis, more and more NLA parts (including an astounding amount for 230SL and M127 engines) that restoring any of these cars--i don't care if it's Paul Russell, Motoring Investments, Hemmels, or someone we have not heard of--is a challenge. I don't believe there is even consistent agreement on every part.
The bottom line as someone pointed out, is they are NOT trying to please YOU, me, or even us. They are pleasing the person who has the money. If they don't want a polished intake or valve cover, for certain they won't get it...