All Mikrotik 60G hardware is so far compatible, so you can mix LHGs and WAPs as you like. But don't expect it to work with other vendors, even if it uses common 802.11ad platform. Everyone is playing on it's own playground, there is no intercompatibility due to customized protocols and different vendors design devices to lock you in on their platform to buy their devices... nothing new.
The smart vendor includes compatibility with other vendors equipment when possible, kinda like how Russian rifles were designed to use Russian bullets but also NATO bullets.
guys please. Vanilla 802.11ad is just like vanilla 802.11b or n.
there are certain things in the standard. also, the standard is from 2012, and it was never ever intended to be used outdoors at a distance. because of oxygen absorption. yes, there are vanilla implementations out there, more or less for indoors and not using phased array antennas.
the other thing is MAC. if you want to use vanilla .11n or anything 802.11 in a multi-access scenario, it sucks. because vanilla 802.11 MAC sucks. that's why vendors implemented their own TDMA based stuff, to somewhat control the inefficient behaviour of the WiFi clients. Or synchronised APs.
this is no different here. if you want to use a purpose-built device in a certain environment what the device was optimised for, then you can't expect something very generic to be compatible with it w/o serious compromises to its original goals. Mikrotik did not intend to build a 'generic' .11ad AP. this thing is for outdoors, it uses technology that is 4-5 years younger than the original WiGig standard.
back at that time receiver side beam forming wasn't widespread, and the original standard did not rely on that. as the result the maximum distance it was able to operate with was literally meters or maybe 2-30 meters. you have here very precise beamforming down to 3-4 degree or so, both on transmitter and receiver side, just to concentrate all available RF energy into this tiny beam to bridge the massive free path loss in the air. so you can reach over 100s of meters if required. or coordination between the clients. none of those were part of the original standard, so each vendor, each silicon manufacturer had to figure this out for himself.
what exactly do you expect? to operate a 60GHz based (most probably proprietary) video headset with it?
i've seen the prices of other vendors, even the ones who use the same BB and RF as Mikrotik. we're doing great here.
on the other hand, the next standard - 802.11ay - already includes specific things that are required for proper outdoor operations, like synchronisation, TDD/TDMA, transmit power control, god knows what. there is a lot more chance to see actually compatible equipment - if not more than compatible at PHY and MAC layers - when vendors start adopting silicons from certified .11ay chip manufacturers.