Welcome Dan! I think you will fit right in. There have been lots of discussions (and arguments) about ergonomics around here.
Most people here are afficionados of keyboards with mechanical key switches, and almost all mechanical key switches register a key press at around half-way down the stroke, obviating the need for bottoming out (unless the force/travel curve makes you overshoot too easily).
The most popular ones are still of a quite early design, stemming back to the 1970s, and back then almost all keyboard switches had either multiple mechanical parts, or they had two resisting elements where one was for general resistance and the other for cushioning after actuation.
My favourite keyboard switch is the
Cherry MX Clear because it is both tactile and because pressing below the actuation point requires increasingly higher force, cushioning the stroke. The tactility comes from a plastic bump sliding against a metal part, and the cushioning comes only from the coiled spring inside being relatively short: shorter springs yield steeper force/travel curves.
It has become popular among modders here to replace the spring in the Cherry MX Clear for lighter ones, but I think those people just don't get the point...
Unfortunately, that switch is relatively loud on topping up, by today's standards. There can also be a gritty feeling when plastic slides against metal inside the switch mechanism, which also makes it a bit louder than the norm.
However, I believe that the same force/travel characteristics could also be achieved in a switch by having both a coiled spring and a buckling rubber dome in parallel, in a manner like you have done.