Okay Plarium, you told us the costs would increase and even asked us all twice "Are you sure?" when we chose a new troop type to upgrade and we responded with "hell yeah, just do it already!" and as you probably predicted, many of us found ourselves in a world of regret when we saw just how much that 'increase' you warned us about really is. Now we are asking for a do-over. Be it an item we can purchase to erase the last troop type we added or a complete reset to the citadel, please give us another chance to make the right decision for us. Otherwise, some of us are looking at accounts that we spent many months working on becoming obsolete because we realized far too late that just because "killers" sounds like what you want, they benefit very little from your level 60 Elsa, the Cavalry Queen. And just cuz you use siege troops the most, gathering resources like we're getting paid for it, doesn't mean they're going to get you the PoP when you're only decent shaman is Ulf the Brave, with his muchness in melee. These upgrades being set in stone has killed our livelihood in this game so please, show some Mercy and give us an "undo".