Supply Caches could use a similar system, where every cache contains a mechbay, and if you haven't won anything good within 10 keys, you are guaranteed to get a Much Bay on your 10th.
This would make supply caches sell like crazy, as the overall value would be greater than just buying mechbays.
Edited by feeWAIVER, 22 July 2016 - 07:04 AM.