As an operator using only wire antennas, a beam antenna is always something to adore. Here is an 802.11ac compliant access point with beamforming technology.
Unfortunately, your receiver (a beamformee) must also be capable of responding to the channel calibration procedure, called channel sounding, initiated by the AP (a beamformer) to activate the feature.
In ’80s when I got my first license, I did not expect such proliferation of wireless equipment, such as mobile phones and Wi-Fi devices. Another thing which I did not anticipated to emerge is MIMO.
And now they are even talking about Multi-user MIMO, which you may be tempted to adopt when contesting or dealing with pile-ups.
This is a nice on-line book to learn 802.11ac related technologies, and the above figures 4-5 and 4-14 are in Chapter 4: Beamforming in 802.11ac.