If it ain't broke don't break it. If Larian just follows 5E balance from the outset, THEN they can figure out what needs to be changed for the gameplay. As it is, most issues with balance and gameplay stem directly from deviations from 5E ruleset and 5E ruleset offers the solutions. (Seriously guys, you gave phase spiders ranged AoE and poison resistance? And eating food lets you heal up to full making clerical magic replaceable by a potato!)