Hello!
As we are starting up a new Demo game here on Apolyton we are discussing whether we should move our settler one tile west to get more workable land. However we are now on a grassland and the tile west of us is shielded grassland (giving 1 shield unimproved).
See thread
here.
Now I remember that there has been a thread that had all the pros and cons of building a city on a bonus grassland. I just cannot find it as they have closed the search.
Anyone remember the effects of building on a shielded grassland? I think it was something like you get the extra shield in the city square after certain conditions were met.