Deck simulation analysis - Asking the right questions

Hello fellow deck-builders!

I need your input to help me create a great simulation tool for deck-building.

I'm developing a tool that simulates your turns and runs through many iterations to develop descriptive statistics. These stats can tell you things like, "How likely is it that I'll have 5 lands out by turn 7?" Or, "How likely is it that I will get my key combo by turn 5?"

All I need from you is a quick brainstorm of specific questions that you think could yield valuable information for the deck-building process.

Thanks for your input!!
-Alex