When I played SK back in 2011-2013, Lockdown was extremely active. You could find matches at all hours of the day, and play almost 24/7 if you wanted. In those days, 24-hour Krogmo Coin Boosters made sense. You could stack a bunch of boosters and grind Lockdown for the whole day to get the recipes you wanted. And iirc, I did exactly that to get the full Stagger Storm and Voltedge recipe lines.
Nowadays, it's difficult to get LD/BN matches going. There's usually only a few hours per day where you can find enough people. Therefore, it would make sense to change Krogmo Coin Boosters to work for a fixed number of matches, like 25 or 50 or something, rather than for a fixed amount of time. They could still be stackable.
I'm suggesting this because I have a bound Krogmo Coin Booster sitting in my inventory, and I'm hesitant to use it. I don't know if I will be able to find any matches in the next 24-hours, or enough matches to make it worthwhile. I feel like this must be a fairly common scenario these days.
TL;DR: Change Krogmo Coin Boosters to work for a fixed number of matches (like 25 or 50) instead of a fixed amount of time (currently 24-hours).
You bring up a valid point.
A greatly diminished player base has made it difficult, if not impossible, for the Lockdown to queue up. In this regard, it would make more sense for Grey Havens to remove the expiration time from Krogmo Boosters, and make it valid for x number of matches.
Very good suggestion! I like it.