（I）Would that everyone treated me as considerately.

这个句子和网友另一个句子相同，也是实意动词would后接that从句表示与事实相反的愿望。句子省略了主语 I。

treat sb+方式状语，表示以某种方式对待某人。treat me considerately, 对我很体贴/很照顾。as为方式副词，意为同样地。treat me as considerately. 对我同样体贴。

事实上只有一个人对我很体贴，我希望每个人都像那个人那样对我很体贴。但事实并非副词。所以treated为过去式表示与现在事实相反。