Its hard to discount any deck with a 3000 ATK creature like Lady Labrynth of the Silver Castle, which can not only easily Special summon itself from the hand but remain untouchable by card effects provided you control a set spell or trap card - never mind one that main deck many of the cards necessary to counter the top strategies of the day
(Don't lay your noncreature cards out at this point unless they're cards you are planning to play as soon as you have that much manafor example, you will generally cast a Raffine's Informant on turn two, whereas Refuse to Yield isn't usually a turn-two play.) A good "mana curve" of creatures is crucial to a successful sealed deck
The standard turnaround time to get a card graded seems to be roughly 45 days, with most companies claiming that this is subject to change at any time
In production, printing plates didnt line up absolutely perfectly from print run to print run
Centered around the Iron Core of Koa'ki Meiru Spell card, each monster had a fairly decent effect but was let down by their maintenance costs, which meant either revealing a card in your hand or destroying the monster in question
But these are expensive and fragile spells so having enough of a controlling and tempo game going is key