Print-in-place case button

Problem definition:

I've built a custom PCB with a tactile pushbutton mounted to it. The electronics gear is going into a 3D printed case. I want a pushbutton on the surface of the case that:
* is print-in-place (no extra hardware cost for an external button mounted in the case)
* reaches down to the top of the tactile button on the PCB allowing the user to push it
* doesn't stand up to thousands of presses - the user may press this button once a year or less
* doesn't need to be air or water tight; other parts of the case expose parts of the electronics to the user

I've now done 4 different test designs & prints with the button having different numbers of "spring arms".

Like the Goldilocks story, the first test design/print had 2 spring arms and it was too "soft". It also allowed lots of movement from side to side; not that it would matter much as the centre post would touch the tactile switch and stop it from moving around.

The second test had 4 spring arms, and it