You could be making a stick with which to be beaten (pun intended).
As a customer, I would be more excited with the start and finish picture, then shipped for next day delivery.
Inviting more pictures and insight could evoke a desire to tinker from the customer.
My experience is that I saw a raw cleft, had a dialogue with the bat maker, and waited excitedly for the interpretation of my ramblings.
If I had a 'half-way' look into the process I could have felt that it was a chance to change my mind and would have had an entirely different product.
I think that the more research the maker does at the outset reduces the chances of mistakes.
Offering the buyer (who is going through an emotional journey, lets not forget) a chance to change, tinker, could lead to a lot of finished products containing mixed messages.
Prior planning and preparation prevents pants poor performance.
The before and after pictures also act as a better marketing tool for the bat maker. The maker can then say 'Look what I created just for you'.
Once again it's subjective.