Apologies for the delayed response.
Posting here, or sending an email to hol-feedback@vmware.com is your best bet, and submitting feedback via the survey that pops up when you end the lab may receive a faster response.
We try to stay on top of postings, but "VMworld season" tends to consume a large portion of our time from August through the end of the year as we release new labs at VMworld and present them around the world at events.
The 1458 lab was not one of our mainstream labs and may not have received as much polish. I would suggest looking at the new versions with App Volumes content. The following labs have such content:
HOL-MBL-1651 - Advanced Technical Concepts of Horizon 6 from A to Z
HOL-MBL-1652 - Delivery and Management of the Transforming Desktop
HOL-MBL-1654 - Application Delivery and Lifecycle Management
Doug