Avoid at all cost
When you think it can't get worse, Devs make it happen. Forget about planning, or saving items. Devs gonna change it with no notice and what you saved will be useless. Planning to migrate and save vouchers? Don't cause Devs change rules with no notice about it. Planning to save shards to increase helper hero level? Again don't, Devs gonna change it with no notice. Something gone wrong and you need support from customer service? Forget about it. Devs have no connection with players, no suggestions listened.