My guess is the plaque and "professional photos" are a way of demonstrating that adequate and appropriate levels of attention have been paid to detail - and also politely but firmly making the statement "now be nice and just fix this."
So yes and no.
It will probably depend on a given recipient/vendor/repairer/whatever values making a fuss of the customer over plain technical competency or not.
For want of a better want to articulate this, I've just realized that it probably happens all the time for people with tons of money to like "helping" with things, and cause irritating damage in the process.
(And that's not including every-day micro-manglement in some large proportion of work environments everywhere in the world... or the client horror stories everyone has...)
It probably can’t hurt the value more than the price of the engine itself. It’s not like a kit car, where you have to worry about the entire body and drivetrain, it’s one (very critical) component which can be yanked and replaced or rebuilt. I suppose if someone really borked it, it might hurt the value of the transmission as well?
So yes and no.
It will probably depend on a given recipient/vendor/repairer/whatever values making a fuss of the customer over plain technical competency or not.
For want of a better want to articulate this, I've just realized that it probably happens all the time for people with tons of money to like "helping" with things, and cause irritating damage in the process.
(And that's not including every-day micro-manglement in some large proportion of work environments everywhere in the world... or the client horror stories everyone has...)