I also wanted a "higher solution" than the standard feet because of our body heights and had been considering Capita. My solution for our Faktum kitchen was ultimately the following, which I would do again anytime:
I had a moisture-resistant OSB board (MDF also works) cut to the length of my two kitchen units at the hardware store, and edged the front with an edge bander, which is easy to iron on. You can also completely skip the edging if you have the "support board" cut 2-3 cm less deep than the base cabinets. It still stands rock solid. All base cabinets stand on this board. This way, you not only have the option to use any feet you want (I used 30 mm stainless steel feet from the hardware store, cut to size), but you also need fewer feet overall.
On the kitchen unit on one side, I have no kickboard under the base cabinets. The feet are installed at always the same distances so that pull-out boxes fit underneath (there are nice white ones from Ikea, but also many others on Amazon & co.). That looks nicely regular and reveals enormous space reserves.
The opposing kitchen unit has a kickboard, which consists of three parts. Two of them next to the dishwasher in full height, and one under the dishwasher, which had to be shortened accordingly. Done neatly, this also looks inconspicuous.
However, overall I would caution that with higher countertops, higher kickboards also become necessary. From a certain height, they simply look, in my opinion, bad. In any case, I find the "open below" variant (visible steel feet with consistent spacing and pull-out boxes) much nicer than a high kickboard. In our case, the dishwasher was not so high that a "box" (whether completely self-built or a shortened IKEA cabinet) would fit underneath, but that is certainly also a good solution if, for example, a matching drawer front is installed.