I definitely agree, even as a very experienced played in DnD 5E there are deviations, and Im more than ok for balancing or just a different take but it would be nice to know and not find out the hard way. Especially for making decisions with non-prepared spell casters that the choices are a bit more set in stone. I save before every level up now.
Another good example would be wild magic, I dont think they really give you any sense of how that pans out while picking the subclass. This is likely something that got back burned cause the community can fix it easy enough on their own by making a resource. The game is polished enough elsewhere for me to not mind but lord help me if y wolf companion gets stuck one more time... lol
