I had suggested in another thread an idea but don't know how feasible it would be to implement code-wise:

When a B/A/S mark spawns, it has no name-plate or health bar until targeted. Basically it would just spawn and no one's the wiser until you target it. Or even better, until you engage. If the latter, you'd have to call in reinforcements and once the battle has begun, only then do you know what rank it is, name plate pops up, health bar.

At that point, true hunting begins, completely under the radar (pun intended) and you'd be extremely hard-pressed to mess with the system.