That's what I meant proposing xcom infiltration - for special covert missions you forced to stay in some sort of patrolling state in place of mission for certain time before you can actually "Land" to the deployment - launch mission itself. it's strange for me that you start with full disguise at the second you arrive at the point. It works for a vanilla landing near crashed UFO or at terror site, bot not for covert missions, IMO
But that's not what any of this is about - this is about telling people how to use item filters.
What you're proposing wouldn't work with existing game mechanics (as mission are set to automatically despawn) and i don't see how it would add anything meaningful to the game. We already spent most of the time waiting for something to happen. I don't see how having to 'patrol' the area would add to the experience, since it doesn't entail any player interaction. It's just added wait time.
As far as i can tell all of this would already have been factored into the mission itself (talking lore wise), since we don't have to wait for submarines to deploy either, or for the avenger to reach mars, for our agents to actually enter caves etc. - all of these would have to include deployment times, but actually including in the game is kind of pointless, as it adds nothing to gameplay.
By all means, go ahead and pretend your agents have to spent additional time doing all of these tasks. I don't think I will.