Important! Raspberry Pi notes. So, the solution for your reusable connection woes? Use JST connectors for many components. This will ease a lot of things.
Oh, also you can make your own printed circuit boards if that will help.
20180503/https://en.wikipedia.org/wiki/JST_connector
20180503/DuckDuckGo raspberry pi jst connector
20180503/https://www.reddit.com/r/raspberry_pi/comments/4tuwao/how_to_connect_raspberry_pi_to_jst_4pin_connector/
20180503/https://www.adafruit.com/product/3422
20180503/https://www.adafruit.com/product/1152
UPDATE 2019-12-04: I have decided that Molex PicoBlade is better because it is more common and it doesn’t lock so tightly that it is difficult to remove.