I think MikroTik can't see the urgency of fixing Spectral History and Spectral Scan (The Dude) in 802.11ac devices.
I'll make it clear: your 802.11ac radios are USELESS without it! It's stupid to imagine MikroTik think somebody can use their 802.11ac devices without the ability to analyse the RF spectrum for the choose of proper channel.
MikroTik, stop everything else you are spending time on wireless and focus on Spectral Scan! Nothing is more important, because doesn't matter which features radios have, if you can't find a clean channel to have it working on.
You keep adding new features and releasing new 802.11ac devices, but don't seem to be even working to fix this fucking deficiency.
I'm hating wireless industry these days. There's always something missing and we must pick a important feature to give up when choosing manufacturers.