API is the way.You could create a phyton script to do it.About how many devices you are talking?

It depends on what you requiered, whit Meraki AP, you can do a lot of things!!Take a look at every site on the dashboard so you can discovere it.

I think you can use the Cisco Meraki Dashboard API.Take a look at this: https://documentation.meraki.com/zGeneral_Administration/Other_Topics/The_Cisco_Meraki_Dashboard_APIYou can export data so you can manage them as you want.

This may help! https://documentation.meraki.com/MR/WiFi_Basics_and_Best_Practices/Wireless_fundamentals%3A_Signal-to-Noise_Ratio_(SNR)__and_wireless_signal_strengthAbout if the avg latency is normal, it depends on your LAN solution, but the transmit ...