What don't you like about the replacement (nit the sculpt, the actual new design)? I consider it strictly better (namely because of the space bar being better).
1) The new Office Key is worthless, in my way, and cannot be remapped. Same for the emoji key.
2) Whatever the button on the left they threw between Ctrl and Windows destroys my mental memory constantly. I was hitting it all the time and never wanted it.
3) They moved Num Lock off the Numpad. Every time I need to find it I have to search because the new location is so counterintuitive and stupid.
4) Rather than one central location to check for the status of *lock, I have to look at keys scattered across the keyboard (including in non-intuitive locations such as "not on the num pad" for num lock)
5) They moved the Print Screen button to another place I'd never look for it.
I wasn't a fan of moving F6 to the left hand but would have gotten used to that eventually.
I had used the Ergo 4000 for 15+ years (and various older Microsoft ergos before that), but this made enough frustrating changes that caused me to look into alternatives out there. I ended up on the Kinesis Freestyle Edge. I didn't want to have to learn a radically different layout (Ergodox, Kinesis Advantage) and have to change every time I moved to a laptop or other machine, and the Freestyle gave me a mostly conventional layout, mechanical keys, and a physical split with enough tilt/tent to get to a very comfortable position.
Num lock is annoying, but for me the F6 key is the bigger issue. Even after half a year or so, I still regularly hit the wrong key.
The new pressure point took some getting used to, but I like it now in comparison to the 4000. The only real issue with that one was how easily it would break from spilling even just a small amount of water. I must have lost three of those that way over the years. Allegedly, the new one is more water resistant.
