A 12 hour 100% buff for workyards would be really useful. A third Irma - between Gift Baskets and Feasts - which could be produced in the Provision House would be perfect.
It's becoming increasingly complicated to keep my buildings buffed between my new Xmas market and love tree cooldowns - I either have to buff them for 6 hours leaving them unbuffed for half the night, or buff them for 24 hours and use a load of stop buffs in the morning. Also to keep mines buffed overnight - it's too wasteful to keep using AIF when they are going to run out soon.
Whatever the specifics, I can't be the only one who would find a 12 hour buff useful.
We have loads of different 12 hour 200% buffs (which are too time consuming or costly to produce to use on all these buildings every day)
... but no 100%!