Thanks for your feedback, this is very much appreciated!
Do you think it would look better without any box or with a different model like fences in square for instance? I'm afraid it could look very empty with nothing at all and make it more difficult to see instantly if there are empty tiles remaining without opening the city menu. Also, looking ahead, I'm considering adding a few 2x2 and 3x3 spots for the future prestige buildings and end-game wonders, and so I think having the tiles totally empty would not help to see the exact shape of the spots.
Having some production building craft only at the cycle ticks is an interesting idea, I like it! It would indeed add some variety in the way building works, I'm keeping this is mind for when I create more content!
I can add the wooden barrel in the press, this is a nice suggestion. I will tweak the grape juice icon to make it more consistent too.
There was indeed a weird interaction bug with the loom, thanks for noticing and reporting it. It is now fixed. And I'm taking note about a building boosting itself when adjacent to the same, that can be interesting for sure!