What would’ve happened if you hadn’t given the brief to a load of engineering firms who immediately focused on speed, time, distance, capacity? What if you’d given the brief to Disney instead?
Charlie Munger’s formula: “There is an old two-part rule that often works wonders in business, science, and elsewhere: (1) Take a simple, basic idea and (2) take it very seriously.”
Stop playing chess, searching for the "right" move. Start playing poker. Make the best decision you can with incomplete information, size your bets appropriately, and trust the process over enough hands.