If they didn't mess with 5e and incorporate their own version of DoS/D&D into this game, you wouldn't need to add food that heals, change healing spells, have healing potions and revivify scrolls falling from the sky, change short rests per long rest, etc. But when a 1st level caster can now cast a fire bolt cantrip that does more damage in one cast than an eldritch blast cantrip, with an agonizing blast invocation (which requires a level 2 character) that also has a 1st level hex spell on them, then maybe you'll end up with damage and healing issues.
