Minimap icons for rares and map encounters

Besides them being revealed after checkpoint and boss completion, they should always be visible after being found by player. Especially rare enemies. With all screen clutter it is too easy to run past rare without noticing (especially if it takes time to spawn, like these rocky golems), or even worse - leave a rare with a tiny bit of health. It's pretty annoying to see yellow skulls at already cleared parts of map.
And sometimes it's just very hard to see where this rare is, especially if it has shroud walker or too much speed.