I know this has been suggested here and there throughout the years, but I feel this is still a very important option to add to the game if at all possible. Having even 1 extra player with you makes any boss immensely simpler; more than 2 is complete over kill. Whenever I come back to the game, I tend to do multiplayer with 2-4 people at a time, as I feel it is best played with others, but the challenge is completely destroyed with extra people.
An option that allows a boss to gain more total HP based on the amount of players would be a huge step towards balance in multiplayer progression. Not sure a damage modifier would work too well considering some bosses later on can already hit like trucks (not to mention moon events), but something to prolong the fight, making it more of a necessity to acquire the proper gear before facing a boss and encourage us to prepare via potions, buffs, ect.. I feel an option like that would add a lot of replay value to the game for those of us that crave challenge, but still want to play with our friends and experience the game in the way it was meant to be experienced.
An option that allows a boss to gain more total HP based on the amount of players would be a huge step towards balance in multiplayer progression. Not sure a damage modifier would work too well considering some bosses later on can already hit like trucks (not to mention moon events), but something to prolong the fight, making it more of a necessity to acquire the proper gear before facing a boss and encourage us to prepare via potions, buffs, ect.. I feel an option like that would add a lot of replay value to the game for those of us that crave challenge, but still want to play with our friends and experience the game in the way it was meant to be experienced.