With the addition of the WoD garrison missions to the companion app(great addition), the issue of how slow it is to manage character missions and adventures is even more pronounced. While in-game I can complete all missions in a few seconds, you’re forced to click each individual mission in the app with animations that then take 5 seconds per mission.
Sending 10 Shadowlands missions, 2-3 BFA missions, 5 legion missions, 10+ WoD missions it takes a very long time per character just to manage missions you could do in a fraction of the time in-game. It should be far faster remote through the app than in-game from a technical perspective anyways.