As you know, Esoterrace will be removed in the next 2.8.5 update. I suggest not removing it because this is wrong, and here is why:
Esoterrace is a nice instance with unique design, original soundtrack, rare remodels, own lore and quest chains. Old developers put really much effort into it. You can also get there a title which will become unobtainable if the dungeon gets removed.
Removing it just to force players to move to new dungeons is crazy.
Why not just remove AP rewards from the chests and leave the rest as is?
This dungeon is a classic legacy that should be kept in the game for those who like doing quests, collect titles and just for fun.
I urge GF team to ask the developers to leave this dungeon in the game - let them remove AP loot, but not the whole dungeon. Hope other players will support this idea.