Certainly a number of interesting suggestions. However, I believe that the current builder does not own the molds (Pays a fee for the use of the molds for each hull). We don't know what the terms of any agreement is, but if a new deck mold (to change the splash well for example, and put in a solid transom, this would be an expensive proposition--and might require a substantial number of pre-ordered boats. When you change the motor position, even with extending the hull, it will change the dynamics of the boat's handling. Putting more weight in the bow, may help to get the boat on a plane faster, and get the bow down for a better ride in chop (trim tabs and a Permatrim will do the same, but avoid the dangers of having too much bow down trim in following seas. Moving fuel tanks also have dynamic trim consequences--and the builder would have to experiment with the effect of the boat's handling.
Standardization of the wiring is certainly desirable--but it is very easy for a dealer, or owner to add an additional fuse block and switches--to accommodate his needs. Tom's suggestion of a pre-wiring for spotlight is good, and should be an option--since there has to be a hole drilled in the stanchion base, along with a hole under the bow pulpit for the wire's exit--grommets need to be around these holes, and the wire run, as the pulpit is installed--or course all of these holes in the deck should be epoxy lined--and that is probably not going to happen.
Barry, I believe that all boats are now foam cored.
If batteries are in the living space they are going to have to be AGM--also take up storage room, and more expensive cables run to the engines for the starting power.
Many of the ideas do lend to easily done options--and more profit for the company (more expensive boats).