Let me kick-off this topic by sharing my thoughts. Since this is an evolving artwork, and the scope is to update it to depict the "Bitcoin forum’s 15th Anniversary", my opinion is not to permanently remove things, but rather to evolve them to represent the current status. (ok sometimes you/we might need to remove items to add new ones since the artwork space/area is limited)
Let me provide an example of the coldkeys/Yogg situation. In the other topic, we slightly discussed this, and I clearly understand the Krog's point of view, to remove all references to Yogg from the artwork. My opinion is that Yogg was (and still is) part of the forum history and -somehow- should still be included in the artwork. Hence instead of totally removing it, we should adapt it to the current situation.
Suggestion: At the part where it is written "Coldkeys", we should cross with an "X" (graffiti style) the word "Coldkeys" (the word should be still readable afterward), and replace it with "Icarus" (also graffiti style). Like someone went there with a graffiti can, crossed the "coldkeys" sign & wrote "Icarus" on the side (probably on top, inside the square to the left of the "collectibles" sign?).
Also, concerning the robot with the "Y" on the head (next to Krog robot), we could totally remove it from there and do the following: you can create a rubbish dump/rusty robot parts landfill and among some rusty robots spare parts laying around (hands, feet etc.) there would also be a robot head (with the "Y" mark)
Tl;dr: We should evolve the artwork, by still preserving the past (since the past is still part of the history)