i really miss the spawnable boss's and yeah i get it everyone was cheating by digging thems self underground but you could re add them in the end of those random spawning dungeons. like a item at the end there that you can not pick up or build around. and if you get killed then the boss will go back into the item and you can not build inside the dungeon before you have killed the boss.
In old beta version there were miniboss-like monsters which i encountered few times; all of them dropped me a nice weapon. They could add this back so they could spawn randomly on planet and always near dungeon or after clearing the dungeon.
they still are sorta in the game but only on random npc quests and way weaker which is a stupid idea and takes the hole point away with them
Yeah, they should make spawnable bosses, even new one's that wouldn't be connected to the story - this would be better.