My expectations: The first one would introduce unbreakable weapons like Master Sword but with higher downtime and inferior durability, forcing you to carry other weapons that are more damaging and 'better' durability or propeties. Finishing the cave of trials allow you to start related quests to unlocking them after finishing respective dungeon. Hard mode won't be master quest level but will give better AI and ability to buff themselves. And also return of some enemies. The second one would introduce new weapon types and enemy, a hidden divine beast that's bigger than the four (Giant guardian that can destroy a whole town with a single laser) with its own champion ability, Or maybe something of Ganon's construct you can take over. And some side quests.