In automation there is a very significant difference between an Emergency Stop (that’s what I expect the E-Stop is) and a normal Stop.
Example: If you have an industrial automation system and you press the Emergency Stop button everything will be stopped instantly. This is usually only being used if there is a risk of death and injury or a risk of destruction of the machine. Usually you will also have a specific process to get the system running again (clear everything, put stuff in a certain position, acknowledge with button to release Emergency stop relay, etc.). Beside of that an Emergency Stop always needs to be within reaching distance from every position where there could be a thread. You’d need at least six locking emergency stop buttons in about 1m height around the FarmBot. Alternatively a SIL2 certified wireless solution would also work.
I totally agree that it would be great to have both! Like that you would be able to pause and go on with play but also be able to use stop to jump out of the sequence without i.e. loosing position or (from my perspective) using an emergency stop because that’s the only possibility you have (which would be wrong if there is no thread for life or machine).
That’s just my thoughts and experience from working in industrial automation for several years.