Midsummer Character Progression

I was naturally drawn to the progression of the "Rude Mechanicals" within Midsummer. They start out as sort of simple, working class people. Shakespeare writes their lines with no meter or rhyme, unlike the poetry that the "noble" characters speak. They almost all seem timid with the exception of Bottom. They have a sort of stage fright, and seem to lack understanding not only of the play they are to perform, but of theater itself. By the end they sum up their courage, and unconventionally portray their piece with odd side speeches and the like. Bottom remains unchanged despite having the most traumatic experience. He is still the same outspoken, self centered person.