Note: I already ammended my comment about that as my original statement was not fully what I intended. Yes, of course they can learn a great deal about theater and theater history -- however, by ONLY doing classic shows, they aren't learning the full scope of musical theater.
Just like I would not only do Neil Simon plays, or only do Shakespeare or only do any other type of show. I want my students to be well rounded and experience many different types of theater: contemporary, classic, experimental, comedies, dramas, melodramas....and just about anything else you can think of.
However, doing those shows don't equate learning how to sing and act. Performance and technique are two different things. They have to be taught those things regardless of the material.
If we're not having fun, then why are we doing it?
These are DISCUSSION boards, not mutual admiration boards. Discussion only occurs when we are willing to hear what others are thinking, regardless of whether it is alignment to our own thoughts.