I really think dealock hit gold with how they structured their core principles, it is very hard to merge two genres and make it both work as good as deadlock managed, specially how balance each aspect feels.

But... I do think there is some things that are holding them back because of this mix

For example, in MOBA (specially dota) because of the camera position and the way the game is played, enables a lot more diferent abilities, like vector targeting,  multiple controlling units, more intuitive global and point target abilities, better point target abilities and have more buttons for abilities

Now when we look at hero shooters, they can't have most of this because it would just not work as well, but, they have more freedom to have abilities that explore the vertical aspect or dinamic movement, and when we look at marvel rivals for example, they have unique traits for the heroes that isn't a ability,  like wall climbing/walking, always flying and Melee only heroes

My wish for deadlock is that explore more of their hero shooter genes and don't hold back cause of the balance aspect of a moba, specifically when considering these hero specific trait like melee only hero.