You're losing me. The current system already allows for farmboy fighters (folk hero), princess clerics (noble) and wanderer warlocks (outlander) thanks to the background system. Are you suggesting each background it's own class that you can multiclass into fighter, cleric or warlock from?
I meant the classes archetypes are from being combined with other classes for reasons. The Warlock being combined with the Artificer, Wizard, and Sorcerer. D&D had hard
An essential element of D&D is classes based on solid full illustrated archetypes, not generic collections of archetypes with mills similarities.