Unlike its other cascade counterparts, Living End and Glimpse of Tomorrow, the big advantage of Temur Footfalls is that it doesnt involve any setup
Given their answer, it seems possible that Wizards has yet to decide since Rosewater is still searching for feedback
Still, just because the Warrior of Light isnt the Commander, doesnt mean that the individual job choices that players love about the game arent represented
If you're lucky, or just planned ahead, you may cloak a card that has another ability to turn it face up, such as morph or disguise
It isnt down-to-the-card accurate (more on this in a sec) but it is a really good ballpark
This can make it more luck based, you can build and draft to obtain a suitable curve, you cannot do anything much extra to draw specific cards early