Thank you forum members for your input. The changes that have been suggested have been incorporated into the Race Hammer. The "window" will follow the contour of the rear of the slide and I must admit, it looks fantastic (I was forwarded a pic by the EDM shop). There is a final sample on the way.
The hammer blanks have been ordered, the program for the EDM wire cutter has been finalized, and production is just weeks away. I must say, I have found an EDM machinist that is way more anal than I am - PERFECT! The hammer quality will be unsurpassed. A lot of time was spent with seemingly simple aspects, such as perfecting the cocking serrations for instance; they are low profile, angled 15 degees, and give an excellent grip for cocking. There will be tasteful, beautiful asthetic radii on the hammer, low cut clearance area to clear practically any rear sight, etc.
One thing I am confident of, it will be available very soon, and it will be worth the wait!