Enhance the capabilities

[Farmer_Cleetus]

Make it so the app and devices actually follow their set rules.
Make it so you can set individual smart notifications for each routine.
(Ex. I want to detect people in Arm Away but not Arn Home)
Create a setting to adjust what's tracked in feed (people vehicles animals ect) and keep that setting separate from the mentioned individual routine smart notification settings.

Create a direct integration with homeassistant.

[JamesC]

Your Arlo devices will behave according to the rules set in your modes. You can learn more about how Routines, Modes, Rules and Automations work here: About Arlo Routines, Modes, Rules, and Automations 

You can make adjustments to the which notifications you receive (Animal, Person, etc.) within the rules for your active mode. This will allow you to suppress notifications for motion detection events that you do not want.

You can filter your feeds to show specific desired events. For more information about how to use feed, see here: How do I filter events and video recordings in my Arlo Feed? 

Arlo offers a variety of partner integrations. Take a look here for compatibility information for you Arlo device: What smart home and voice assistant systems can I use with my Arlo devices?