Keeping it Simple: Google Classroom vs. (and?) Haiku

This post is devoted to Google Classroom. To my understanding, Google Classroom's strengths are related to the live classroom setting and the control that the teacher sustains through the digital document sphere.

Advantages:

• live monitoring of student worksheets in real-time--teachers can oversee and monitor student engagement and progress on a particular worksheet without literally looking over students' shoulders
• control of each iteration of the master document--teachers are the "owners" of each unique student worksheet
• No need for student downloading, writing/editing, and uploading of worksheets: teachers can immediately "push" worksheets to students, and students can immediately submit/have work collected. 
• Collected work is centralized and graded in a single site (with immediate grade visibility and teacher feedback)

Disadvantages:

• As a teacher who uses Haiku for assignment posts, work submissions, grading, plagiarism checking (now available through turnitin.com!), revision, grade assignments directly into the gradebook, etc., etc., I don't see the place for Google Classroom in the mix!
• I could imagine using it during a live, immediate, and daytime classroom writing session or worksheet completion/submission session, but I don't see how it's much different than using Haiku outside of school. 

Given the above calculus, I feel now that it's an added but unnecessary channel for student work. I could imagine using it in pockets or sparingly, but I'd prefer Haiku for its gradebook integration and central site for classroom work. 

Still, if Google Classroom integrates into Haiku (are you listening, Google?) then I would gladly use this as a robust classroom tool.