Mono colored decks can struggle with one or the other, but that's not much you can do about this except run another color
It lets you get to your massive threats a little bit faster, which is exactly what green decks want to do
When scaling to larger sizes, its fairly easy to jump from 180 to 360, with 50 being the minimum number of lands that I start with at that size, and 60 being closer to my preference just to ensure that players can cast their spells
Our format is fresh, exciting, and there are so many tournaments coming up soon
As you probably know, before my game fell apart I was running a Ravenloft game and it just so happens that the most recent set of Magic cards: Innistrad, was becoming a rather large piece of inspiration for setting up my game, especially the monsters (see my Grave Titan)
The active player has priority after the spell resolves, so they can immediately cast a new spell