Tadaaah, we know you are just the messenger and we ALL know that the tanks are going to be usable in future event,
BUT
that is besides the point, the point everyone here is trying to get across to you (and by you, we mean the developers or whom ever is in charged of making this last minute changes to events without any apparent proper thinking of how it will affect customer).............. is that MOST players have already SPENT ALL their ingame cash buying the tanks...........now you are gona have (besides very angry customers) 80% of the players not being able to buy the new units you mentioned, because the do not have the cash to do so...............
Making it simple:
1- we know you are just the messenger
2- we understand tanks will be use in future event
3 - 80% players have no more ingame cash to buy the new units
Please either
A - take all tanks from players inventory and refund the cash paid
B - Replace ALL tanks in players inventory with the equivalent value in the new highest stat cash frontline units
Many thanks