I use a wheelchair and just finished remodeling my newly bought house for accessibility. Here are a few thoughts.
The first thing to consider is how much actual restructuring of the kitchen you are doing. For example, are you replacing all the cabinetry, or just refinishing? If you are replacing cabinets, consider installing some shorter cabinetry as well as traditional counter height, to accomodate those who cook seated as well as those who cook while standing. Another excellent option, if you aren't fully replacing cabinetry or your kitchen is too small to provide varying heights, is a pull-out food preparation space or large cutting board. (I did not do this in my kitchen, but I have a seat elevator that raises me to counter height, so it isn't an issue for me.)
Choose stoves and other appliances with controls on the front for easy access. If possible, find appliances with large, clear display screens that are easier for vision impaired and elderly people to read. Side-by-side refrigerators are best, and I adore my
drawer dishwasher. If possible, a countertop stove with open space underneath, and a separate wall oven are more accessible than a stove/oven combo. Open space under the sink is also essential. I just took the doors off my sink to accomplish this, but doors that slide in or accordion doors are a nicer-looking solution.
Make sure that all drawers slide easily, and have handles that are easy to grip. Knob handles are generally not a good option. My house has old cabinetry, and I couldn't get some of the drawers open. I replaced the knobs with T-shaped pulls and now it's no problem. Choose countertops with rounded corners for safety.
Obviously, the more space you can provide for maneuvering, the better. If you are replacing floor tile, choose something that isn't slippery.
I may think of more later, but that should get you started. Thank you for caring enough to look into this and for wanting to learn how to create a more accessible living space for all!