By "readily available at the command line" - have you forgotten that the context of this discussion is for a language to use for a first year programming course?
A not insignificant portion of the people taking those courses will not be command line savvy.
Also, I think that the fascination some programmers have for tools that are cumbersome and difficult to use is unhealthy.
The tool should not itself be the problem.
The tool should be a force multiplier that lets you solve other problems more easily.