Guide / HowTo (GoogleSpreadsheat, docs.google.com)
SQ = Spending Quotient
Some new ideas
Idea A: Choose GM-Spending-Skill in Step #1 and #2. Without gas reaching SQ 90+ is not that hard. Though it might take 10 to 30 games, training Basic Mechanics (Video) is really, really IMPORTANT.
In Step #3 you choose a new League Goal. E.g. Gold and SQ = 45. For Gold you could choose 40 or 50 SQ as well.
You should try to reach your new league goal in 9 out of 10 games. If you don't like this approach, just do it in 4 out of 5 games.
Idea B: If you start with Step #3 just build one Gas for 5 games (or 10). Reason: Your SQ will drop, when you take Gas for the first time. Players, who take 4 Gas or more will often times accumulate more than 1.000 Gas, and their SQ will drop 10 or 20 points.
E. g. in Step #3 you choose 80 SQ. If you have 90 SQ or more in #1 & #2, you can drop 10 points in #3.
Idea C: One of the major advantages about TheStaircase: You can play as you like. You do not have to grind a specific BO (Build Order) vs AI and then you can start 1on1 ladder. You can jump into the ladder right away and choose whichever BO you like. BUT ... but playing a solid BO is really important in SC2, so try to play a ProGamer-BO for the first 30 supply and hit the Timings and Benchmarks.
Idea D: Use a Cheese-BO (12Pool, Proxy-Rax/Gates) in 25% of the games. If you dislike Cheese, play it only 10% of the games. Goal: Cheese will train your Multitasking.
IMHO TheStaircase is about training Macro & Mechanics, but it is not about Macro every game. IMHO a solid Macro-BO is very important, but Multitasking is important as well.
Idea E: Step #1 & #2: Veto Maps like "Acolyte", "Proxima" and "Vaani" and other Maps with a pocket expansion. Why? Jak/TheStaircase says "Play aggressively" (in his first guide). It's easier to pressure the Natural on Overgrowth or Daybreak than it is on Proxima or Acolyte.