Make Premium equipment and Heroes more accessible

The current average cost of unlock premium equipment (details) and heroes (details) make them inaccessible for the vast majority of players. I have some suggestions to help more players unlock them while preserving an advantage for those who can afford these prices.

  1. Retain the count of attempts for the bonus reward (epic after 50 opens for equipment, 5 shards after 25 opens for summon gates) between iterations. This way it makes sense for players who have collected some gems to have a go, because if they fail (as they probably will) they retain the progress towards the bonus for the next time the item/hero is offered, by which time they make collected enough gems for another 11 opens.

  2. Allow players to pay a small premium to use their Summon Keys / Gold Keys towards special Summons / special Crates - for example, for Special Summons, in addition to the current options (Open 1 for 500 gems, Open 11 for 5000 gems) offer Open 1 for 1 summon key + 100 gems. For the Special crate, Open 1 for 1 gold key + 100 gems.

  3. The current implementation of free ad-based keys would need to change to make the above practical - otherwise saving up keys until the item/hero we want appears on rotation would mean forgoing the free key. Easiest way for this might be to have the crates and gates open only for Keys and Gems, and move the ad redemption to the Offers tab - from there we can watch an ad to receive a key, and if we want to redeem it immediately we can move to the Equipment / Heroes tabs and use it (much like we can redeem a key on the BP and then move to the shop to use it)

  4. Additionally, as a hero / equipment ages, it would be nice if the chances of getting them increased. For example, for the first 3 months of launching a new hero, the chance of getting the new hero is the same as the other available heroes (currently that would be 6.25%). For the next 3 months, make it 50% more than others (that would be 9.09% for premium hero vs 6.06% for the 15 others). Thereafter, make it 100% more than others (that would be 11.76% for premium vs. 5.88% for the 15 others). For the premium equipment it could be 1% for first 3 months, 1.5% for next 3, and thereafter 2%.