Maybe a statue of the Abomination or Emperor of Corpses in the End of Time, scaled to their current status in their respective monolith/empowered monolith (whichever you were in last), WITH the boss damage reduction scaling and a deplete-able health bar? Extra points if the statue crumbles when it dies, then reforms back together with full health.
Edit: This would maybe help you guys too, no more having to command a spawn or load a specific file state after edits every time you want to look at balancing a boss killer build…
Quite a few requests for similar dummy updates - usually pop up every few months. Llama and company probably might know if the devs have mentioned anything they might consider…
The only thing that they are not keen on is dummy damage hit / ailment records/logs etc… apparently its a serious bit of work to implement this and it is likely going to cause a performance issue and they dont have the time right now - maybe it will come post launch in an update if we all ask nicely… maybe it will be easier once they have fixed all the other tooltip dps and skill dps info…