The ability to have 3 buildings in you're que is amazingly handly... until you get further on. then its anouying. the ability too only put three things in a que and have to wait is quite irrating. for instance if loads off wells & wheat fields run out. you have to sit their for ages clicking. now im not too bothered as i do it over the course of the day. but i think they/you should add that when you upgrade your mayors house (each lvl) then the que expands by either 1 or 2 spaces. enabling you to put more in your que.
another suggestion is for farms to have their own building que. that you can put in resorces (mabey more as you arnt their too do it yourself.. say 50% more resorce cost) to place another wheat field when one runs out.