Here is an idea for a linear slide based lift that might be useful to these using VEX GO and especially with the GO Competition fields…
Word of warning, this is something that I would suggest using with coding only as the remote control doesn’t really lend itself to controlling a motor in this way.
The lift is controlled by a rotating arm on a motor. As the arm rotates, the lift is pushed up the slide. As the arm rotates back round, the lift moves down the slide by gravity.