Jon Chung
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As I said in one of the posts above, I don't consider campaign design ("putting level 20 mobs into a level 20 dungeon") to be a case of houseruling nor fudging, though I already found out that Shyft does. And apparently you too.
This game has no such thing as character level. The only way to estimate threat level is by understanding what is threatening and what is not, which is information a new GM will very likely not have. Imagine you are populating a dungeon, but none of the provided mobs have CR ratings, hit dice or character levels. You see orcs and goblins, a bunch of numbers associated with the orcs and goblins and go "oh, okay, orcs and goblins, the source material has heroic adventurers cleave through them like a hot knife through butter, they can't be too bad, right?", and populate the dungeon with orcs and goblins. You run the game and the orcs and goblins promptly massacre your heroic adventurers. Whoops.
Also, do you think it is appropriate that the things which are threatening are in fact that threatening? Should a demigod warrior, a golden god-king, a divinely-empowered celestial weapon, be mostly helpless before a small mob of hostile bandits unless they have one specific Dodge Charm, to pick one random example? Do you really think it's not the fault of the system that this is the case, that it is the GM's responsibility to have to ensure that at no point in the campaign does the (not so) Invincible Sword Princess have to fight more than four targets at a time?
I would expect a GM running an unfamiliar system to start out with one orc, then maybe three, and then a half-dozen, after seeing that it's OK and that there are no scarily cumulative effects (with Coordinated Attacks, there are). The only 'landminey' thing in there would be the Clinch and the Fifth Orc rule, but both of those are things that a GM either doesn't know about, and thus presumably either doesn't even try to use (e.g. one would read about Clinches if one planned an encounter with grappling orcs; the 'no DV' is a glaring thing that isn't easy to miss when you plan your tactics around it) or doesn't know to apply at all (e.g. not making the attack Unexpected even with five orcs, because of not knowing that the Fifth Orc gets to ignore DV; again, if the GM knows that the rule exists, s/he is likely to immediately realize that 'no DV' is a scary thing for anyone without Resistance and a sufficient stash of motes).
Both the GM and the players don't know the system at all, then it makes sense to start out with a low-stakes low-threat encounter and build up from there, whether with a duo of hobbits or with sixpack of Aragorn-clones.
When your premise is shining demigods with anime battle auras who can parry falling meteors, you'd think one DB and a bunch of goons would be a low-stakes, low-threat encounter, right? Except, no. That dude is TPK material. Whoops.