I offer the simple decision against "Failed" garbage (spam) in transactions - let the game penalize each failed transaction by a small amount, sample 1 SD or (0.001 SD ^ n) for every fault, n

Oh, too quickly gameplay's changing without any announcement in some days before it. So, I lost my 21 Battlecruiser Tiger's ships in my defending battle in the time of your changes (Mission : M-ZYP4SHZ6LM8