Nice! I think I'm starting to catch on too.
My first Sealed pool was a total 0-3 trainwreck. The pool was pretty bad IMO, I tried different ways to build it and they all sucked.
Next I went 2-3 with a mediocre Grixis pool, lots of removal but few ways to close the game or get card advantage.
Then I went 4-3 with a pretty strong UG pool in which I got greedy and splashed white for removal, lost a couple games to mana screw.
After that, in my fourth attempt, I 7-2'd with 15-land UR spells, no rares (well, just Temple of Epiphany). Admittedly I was super lucky to draw one of my good 2 drops in almost every game, and using my combination of tempo and reach to close games. Some pretty memorable games too; I won a game without cards left in the library, and in the last game I beat Baneslayer into Garruk. GG, would play again.
The deck was super clunky with 7 five drops but I didn't have other cheap cards worth a damn (maybe one of those should be a land, and indeed it would be if I didn't have the Temple)
I also played a Premier draft with the saved token from IKO mastery pass, it was a mediocre Malefic Scythe BR beatdown/sac deck (I raredrafted which didn't help). Went 2-3.