I agree. The order of the tabs don't even make sense.
When you choose your proficiencies and then go back and you have to choose other things later. If you pick Draconic Sorcerer, you've already done appearance but now the draconic scales are there but you've passed that tab. It's so easy to miss stuff.
When you get the extra cantrips/racial spells, I think it should be more clear.
