Thank you for taking the time to give us your feedback! That's very thoughtful of you to do so.
The wildcards aren't necessary to collect for sure. It's part of the risk element because you could get very good buffs like (+ points, - health) or (+health), which is a gamble and how you choose to strategize where you should go. So it just depends on what you're trying to achieve, just escape or escape with the highest score possible.
Appreciate you checking us out too!