Training mode for bosses ?

Hello everyone and GGG,

Loving the game so far and you really have started of absolutely fantastical with this game, it has so much potential and i am looking forward to playing it as it evolves.

As a suggestion for further development and keeping it inline with your vision for a single portal for maps and bosses have you considered adding in a training mode for the pinnacle bosses at least?
i feel like this could be a good middle ground between the players and the developers as it is incredibly frustrating reaching a pinnacle boss after 100h+ grinding just to die to a one-shot mechanic because you didn't know the fight.

this also alleviates the issue with having to leave the game to find some YT video on how to run the boss and actually let you experience that for yourself in game instead and you don't have to compromise on the difficulty of the actual encounter in game.

story wise this could be implemented by speaking to Doryani which have managed to stabilize and freeze a singular place and time and loop it by some vaal tech he created himself or something like it.

or if say that you want to practice the breach boss for example you could speak to Doryani and for a splinter he could " draw out it's power " and let you fight a fraction of it's essence or something like it.