You do pretty good.
“The first step to finding out why something does not work is to find out why it does work.”
(📑 Status Effects (Buffs and Ailments) and Stacks - Dead topic see link in post #190 - #2 by DaveCozy)
As a game modder/ RPG Game master, I just cannot resist “What if…?”
Click for sampler
4* ascension items and Hero XP
Not great, but an attempt at compromise
Duplicate heroes
Argh. This is not my greatest game design work. But I found it amusing at the time due to a private in joke only a dozen people on the planet will get ( waves to Phil, and Kaja, Foglio )
([Suggestion] Purple Easter Bunny, er, Purple dragon summons)
Trade
One of the advantages of trade is you can trade 5*+20 heroes instead of 5* 1.1 heroes ( see Niantic’s Pokémon GO or physical Collectable Card Games. )
But trade works best when supported by alternate mechanics so trade is not the only, or even best, option.
See shards ( 5* HotM and 4* ascension items ), retiring costumes 5*+20 Heroes / Level
30 4* troops, and mechanics for effectively using duplicate heroes like differentiating between multiple 4*+20 Grimm with different emblem paths.
FIN