I guess the case with bosses is: you arent supposed to solo them, grab a bunch of adventures to form a party and start the figh, simple as that, the current quests, wich lead to most of boss fight will hopefuly be reworked to lead to those bosses later on, lets say, we do have side/daily quests. but we may as well get main quests based on region (i said region meaning a bunch of maps would be part of that region), then we party up with others and do the fight, but all this is just a guess/suggestion to make the gameplay more interesting.
I do get what you mean on gameplay as cleric, i played with mine on many boss fights in a party, where some mindless ppl just rush in the boss reach to do extra dmg and disregarding the AoE alert from boss stand in there and take the full blow, dying or almost dying in the end, i ended up release my heals a bit away from the boss so they could heal, but some just pass over all the squares and some ppl on the party end up not healed.
