I'm starting to feel the same about the take home tests. Too time consuming.
My test was completely open-ended. Trivial task (script to copy data from .csv to a sqlite, optionally notify on the queue at the end), but make it as production-ready as you can/want. I don't think I could learn as much about people's abilities during an interview, as I could from that task. I mean, the 1 person who made a proper package, a short .rst install & use documentation, and included crazy unicode test cases was immediately on the top of the list.