Eyes of Nine
Everything's Fine
Because of this. If you get all spells at level 1, be cleric 1, wizard 1 and then level anything up and cast every wizard an cleric spell as you wish. If there is no entry level like level 5 wizard for fireball, be wizard 1 and cleric 4 and happily throw 1 fireball after the other at spell level 3 potency.
I am not proposing to get rid of Spell Slot levels. I am only proposing to get rid of Spell Levels.
According the PHB for Wizards and Clerics, it doesn't matter how many wizard or cleric levels you have to have access to X level spells. It's whether you have the X-level spell slots. So yes, you can be a Bard 1 Sorcerer 1 Warlock 1 Cleric 1 Wizard 1 in the rules today because you will have 4 L1, 3 L2, and 2 L3 slots. Thus you will have access to Fireball if you either a) learn it at 5th level or b) get a spell book with it.
My proposal is you can be Wizard 1 and get Fireball. But since you only have a 1st level spell slot, you cast at 1st level and it is limited in comparison to the 3rd level slot.
If what I'm proposing isn't clear, I apologize. Maybe it would be easier to explain in person, maybe not. But I'm not super invested in an idea WotC won't ever adopt. And also, as someone noted, it would be SUPER Not-backwards-compatible. So it's off the table anyway. I don't think I'll spend more cycles discussing this idea.
I've got a different idea anyway that I'll throw out in another post
