Keep in mind that the Mids has the potential to lead to a much more substantial amount of production. The 1st is obvious - more farms always leads to better, more frequent whips, and the ability to work more mines.
The second is a style preference - super tight settling. And I don't mean just a few tiles overlap. I'm talking very aggressively - say perhaps a city every 3 tiles. This takes away some of the potential headaches in the decision making process when people have the Mids too.
Do I run Pacifism? Do I run Org religion? Do I run Caste? Should I be whipping more or should I be running more specialist? Etc, Etc. With many tight cities you can keep it very simple. Run 2 scientist, plus whip and build things as normal - this is a huge help because lets be honest, how many maps even have enough food to run many more than 2 scientist in every single city while still growing and doing other stuff?
Also, many tight cities has the ability to greatly increase your production. Would you rather have 1 size 12 city, in Caste, running 4 scientist, with only enough food left to work 6-8 hammers?
Or would you rather have Two size 6 cities, in Slavery, running 2 scientist each, and both working 11 Hammers - 3 farmed FPs, 1 plain hills, and 2 grassland hills. The real issue becomes affordability and ORG shines. Of course, leaders in OR with forges can whip stuff quick enough.
It doesn't make a lot of since to be in caste and lose slavery or be in pacifism and lose OR just for one very good GPF. Stay in slavery and OR the vast majority of the time with the exception being during GA or a few well timed GPs.