It's still pretty unprofessional in my opinion.
you call the lack of a build menu "unprofessional"; I call it practical
Man the class select menu is so inconvenient, I just want to change classes at the press of a button!
I'm not even going to tell you why the analogy you're making is retarded, you should be able to figure it out on your own.
a·nal·o·gy [uh-nal-uh-jee]
noun, plural a·nal·o·gies.
1. a similarity between like features of two things, on which a comparison may be based: the analogy between the heart and a pump.
Similarity:
You want to build and destroy with the press of a button
I want to change classes at the change of a button
Both are convenient for a small portion of the community but inconvenient for a much larger portion of it.