Typically though campaigns scale harder the further you progress in them. Act III and IV in inferno in D3 were much harder than Act I and II. Act IV and V in D2 were much harder than Acts I-III. I assumed their campaign would follow similar logic.
I also think they want to have a good sense of progression with the keyed dungeon system like you do with the mythic+ system in WoW. I’m not sure that’s achievable with just a few keyed dungeon levels. The mythic+ system in WoW extends well into the 30s and I could see the keyed dungeon system scaling much further than that. They’ve shown a rank 15 key in their original description of the system at Blizzcon 2019.
I may be assuming too much here about the way keyed dungeons work, but from what I understand they have a rank and an affix.
- The rank increases the monster levels in the dungeon.
- The affix introduces a new effect to the dungeon.
- It’s unclear if the number of affixes introduced will always be one, or if as the dungeon rank gets higher we could see keys with multiple affixes.
- It’s also unclear how you get higher rank keys. Do they start dropping randomly after you beat a lvl 1 dungeon you can start to find lvl 2 keys, or do you have to combine keys you find to make them higher rank, or can you rank them up at the end of a run?
The original intent of my proposal was to let the key ranks be synonymous with campaign difficulty, where maybe Act I in the campaign (or the dungeons in the first zone you quest through) are rank 1, then in Act II they are rank 2, in Act III they are rank 3, in Act 4 they are rank 4, and then in Act 5 (the fifth zone), they are rank 5. If the difficulty scales linearly on key ranks this would make a lot of sense.
Then each campaign instance randomly rolls a dungeon affix (1 affix on NM, 2 affixes on Hell, and 3 affixes on Inferno), but the instances are still scaled based upon dungeon key ranks.
We could absolutely separate the ranks of keyed dungeons from the campaign altogether and have NM, Hell, Inferno have its own handcrafted difficulty progression curve, but even in such a case I think it would be interesting to let dungeon affixes randomly roll on campaign instances in those difficulties.