Welp, couldn't find much on this but might just be google derping on me.
Anyway, my suggestion is as follows:
-Whenever someone leaves a lockdown game people who are waiting for a lockdown game will recieve the message "1 player is required to fill in in a lockdown game". The first one to click on this message will connect to said lockdown game and will fill in for whoever is messing. HOWEVER, the substitute will NOT have to pay 200 crowns to get in and will also recieve NO krogmo coins. The person who left will recieve no krogmo coins as usual.
Good idea.
+1