First impressions playing around, for me the biggest missing feature with this BE58 Go that its competitors have, is spoofing/custom WAN MAC address options. Both GL.inet and TP-Link have easy options (especially when setting up WISP mode) to set a randomized / rotating WAN MAC address. It would be great if ASUS would add something similar. It can't be that hard to do this.
Speaking of using this router, it seems like the firmware is pretty buggy at the moment (even after updating from the 3.0.0.6.102.38969 firmware my unit shipped with to the "initial release" of 38978. A few of the very innocent looking settings (like setting a WAN MAC address, and changing the WLAN 2.4/5GHz bands/frequencies) causes clients to only connect at 2.4GHz, even if you change the settings back. I have to restore from a backup config or factory reset. I just spent 2 hours wondering why after changing some settings that my clients could only connect to the travel router via 2.4GHz.