Need to make a hero option no doubles on multiple pull

You charge 3000 for 10 pulls of heros… yet even in a new world adding over 10 new ones when you do one 4 end up being doubles of what you got in the same pull. Seriously maybe it’s time to delete this money grab of an app. There should be an option charge another 1000 “No Doubles within Multi Pull” for 4000 your guaranteed not to get a double within the same pull. None of this 4 Azar and 6 more 3 stars. No more same guy 3* same guy same guy new 3* guy same of that second guy and then one 4* and 4 more 3*. You want people to get excited about this new world well way to bum them out right from the get go.