Abyss Aim

Since the 12.1 hotfix, addons can't read which way the minimap turns inside an instance, so the old rotating raid helpers stopped working. The compass ring still turns with you, though. Abyss Aim lends that ring off the minimap for a few seconds at a time and draws with it, so what you see points at real directions in the room.

Vashnik

Around each Plague Froth you get a cross through your character, one north-south line and one east-west line, the axes the waves run along. It comes up 6 seconds before the froth and stays 6 seconds after, and you can change both. You can pick each line's color, show it the whole fight or turn it on for tanks, who don't get it by default.

Sszorak

The radar shows the room as eight segments with the exit at the top and the entrance at the bottom. The winds come from the six segments between the doors. When a wind shows, click the segment it comes from. The radar numbers the winds 1 to 4 and puts the same number on the opposite segment, where that orb goes. From 8 seconds before the first Venomous Surge of each pair you get two arrows pointing at the drop spots for winds 1 and 2, and before the second surge at 3 and 4. The arrows sit side by side with the drop spot's marker and the wind number under each, and their drop spots light up on the radar. Each arrow wears its segment's marker, and you can change the markers with a right click. After each intermission the next click starts a new order.

The radar appears on encounter start with Sszorak in the raid and stays until he dies or you leave. After the kill it stays away for the rest of your lockout on that difficulty. use /abyssaim radar to set up markers prior to pull.

You can bind a key to each wind segment and one to clear the order, under Abyss Aim in the game's key bindings or on the settings page. A key does what a click does.

Debuffs are hidden from addons in combat, so everyone sees the arrows, orb or not.

Limits

There is one compass ring. Some addons borrow the same one, so don't run them in these fights at the same time.

The two lines of the cross and the two arrows take turns on the one ring every frame. You'll see a light flicker, and a screenshot only catches one of them.

Heroic and Mythic confirmed to work.

Try it out of the raid with /abyssaim vashnik and /abyssaim sszorak. Out in the world the radar also shows where north would be in Sszorak's room and a line for the way you face, so you can put down world markers the way the room has them. /abyssaim opens the settings.

Notes

I am not too serious about this addon, its mainly a proof of concept to show the holes in the minimap hotfix, so use it while you can if it helps you as I just like to test the limits of the Addon API. And if anyone wants to take this tech into their addon, they are free to do so, I doubt it will live for long.