League - 1 Life Trials
It seems like the point of the trials is for people to play the game in drastically different ways than they normally would. However with all the trials being 1 Life they all inherently feel very similar because the restrictions on how you need to play to complete a 1 life challenge is already so great that it is the main limiting factor in almost all of the trials.
For the large majority of the trials having the life restriction just makes no sense. What does 1 life have to do with the artisan trial which is all about crafting? This shouldn't be a universal modifier on all trials. Its homogenizes them and just makes them the same. Instead it should be reserved for the most difficult trials that are more about showing off than anything else. For instance the 'High Risk' or 'Nightmare + something else' trials it makes sense, the whole point of them is that they are very difficult. Or just make it so you only get the achievement if you complete a trial in one life, but you always get the rest of the rewards upon completion.
If you really insist on doing universal death punishments on all trials, instead of doing 1 life and you fail instead apply a penalty to the player. You can even tailor these penalties to the trial being done. For instance for Greedy Goblin where you need so much money at certain levels make people lose 5% of their carried gold on death. Survivalist make them lose hunger/thirst.
Some friends of mine were planning on doing some nightmare characters when CoA officially comes out just to make questing/dungeons not a complete pushover. But if the current system replaces what is currently there, this will become impossible because we will not do it if there is a life restriction (especially if perma-death remains a thing which really needs to be reversed). I've done nightmare multiple times for no further reward just to make things not trivial, but again this will no longer be possible under the new system.
Lastly I will say that personally I find 1 death challenges boring grindfests because of how carefully you have to play them. I think the general idea here is great, but I personally refuse to do another 1 life challenge because they are just not fun. I really hope when this system leaves the league server this changes or you'll probably find that the large majority of people will just ignore it, I know I will.