Increase Mightyena's NPC price so that it gets extra chance again, or increase the catch rate.
Reason: Mightyena is not easy to catch and having extra chance was encouraging to try(because we knew in the end we would get extra and catch it eventually). But now that extra chance is gone it started to became frustrating. I guess you did it because you wanted to punish people who put Poochyenas to daycare, evolve them and sell them to npc to earn money, but it's also punishing people who are trying to catch it. Hence, in my opinion something should be done about it.
19:15 Used 6937 great balls, 62 ultra balls on Mightyena. And didn't catch yet. Easy