T F C dont know who youre mini briefing was from but suggest you speak to somebody who knows the ins and out a lot more clearly.
This deal is for controllers to do met on a nightshift, EVERY nightshift, as well as acting as contingency cover during the day. Would hardly describe that as being limited circumstances.
Also SAMOS (Semi Automated Met Observation System ) has been in place at airfields for many years. It is almost constantly inaccurate in at least one of its observations hence the need for an observer ( ATCO or ATSA ) to correct the information before it is broadcast.
Management would undoubtedly wish to introduce FAMOS ( Full Automated etc ) but unless there is a major improvement in the standard of observations achieved by this equipment its implementation should be heavily resisted.