●For the update this week the delay between changing regions and mission reassignment is being tuned. Aircraft => 30s (up from 20) Ground vehicles => 18s( up from 10)
Plus the stale defend missions wont' be there to give you false positives which means you're less likely to get a reassignment.
These two changes should greatly reduce the re-assignment spam you see as a result of travel. It also means that once you reach your destination it will be a bit longer before the mission updates. This may be tuned further, but this is one of those areas where it takes live feedback and playing in the real environment to get a feel for the proper values.
The locking behavior & squad locking is planned for phase 2
●We talked about that but didn't want to go that route because how players use waypoints is highly variable and we didn't want to add additional meaning to existing waypoints so we didn't disrupt the way players lead or manage their navigation.
Instead it will be a squad mission, which will interact very similarly but still allow players to set waypoints separately from their mission.
Think of the squad mission as being a special waypoint that dictates the squad objective, while the squad waypoint is a flexible marker that the SL can use for general communication of locations.