I am still working on the wiper switch. Keeping a classic tiny style, it is not possible to keep the variable interval-set potentiometer inside the stalk. It has to be outsourced, or dropped at all. It is a question whether the variable interval-set is really essential.
But as mentioned, still working on it.
No doubts there might be better looking alternatives - it's a question of personal taste and limits of machinery available. If no limits, You can do anything.
It is a kind of sport for me, maybe a challenge? But definitely, I want get rid of the originals.