For the moment a 400 pull gives you 1 4* hero guarantee. But it could sadly be a monster.
I know some newcomers who do 2-3 times 400 gems pull, but end up with none 5 stars capable hero and decide to quit...
I'd love it if we have some improvement to the bonus pull and if possible an option to pick different boxes for different type of bonus pull, for example,
Box 1 bonus: 4* job-selectable hero guarantee (Choose whether you would like blue, red, green, yellow type hero)
Box 2 bonus: 5* capable hero guarantee (Heroes which can advance to 5*, come in 3* form)
Box 3 bonus: Event hero guarantee (Hero for current event guarantee, like Winry)
The box bonuses can change according to events and such.
Some limitations can also be imposed, maybe allow only a certain amount of pull per month.
And maybe create a beginner box, every account can only open once, but give good bonus.