The problem is they CAN'T just push back these patches. If all they did was keep adding and adding and adding stuff on top of stuff, all of that new stuff is going to be broken when they change the systems. Why create MORE work for the Dev team to have to go back and redesign all the old stuff when they could just wait and have the systems ready for the new content? You can see how slow they are moving already, imagine how people react when they have to push back NEW content to go back and fix OLD content.
On top of that, crafting has been mentioned multiple times as being worked on, especially the recipes. The crafting system is again another system that they are working on adjusting and they can't go and adjust a whole bunch of recipes and add new ones when they have to fix the whole system.
On the issue of server latency and in-game bugs I agree, but is that really something that needs to be touched on in every producer letter? Or isn't that something we should just assume they are always working on? I know a lot of people are having problems in this area, but I am not. Even in the cities my latency is next to zero. Maybe that is because I have Fios, I'm just saying.
Also, by my count they have been pretty good about entering smaller patches every few weeks. They may not contain the stuff we WANT to see, but they are there.