Micah Sweet
Level Up & OSR Enthusiast
I liked the different versions of spells. I feel it added verisimilitude, since the effects were developed from different sources. Unified spellcasting is an overly simplified crutch IMO, and I was never looking for "easier" in any case.There's no inherent reason for the differences because ... wait for it ... it's a game. We used to have different completely separate spell lists for different classes but there really wasn't much of a reason for it other than you had to carefully read the spell labeled the same thing to see if there was any difference. Sometimes it was just a difference in duration or area of effect, other times you had to read the description. It didn't really add much to the game.
Meanwhile there are different options for casting spells but (other than wild magic sorcerers) casting spells is like artillery that the game grew out of, reliable and predictable. We can't even have restrictions on druids not wearing metal armor any more because for a lot of people "it doesn't make sense". So the spells and casting them has become fairly generic with good points and bad. Overall I don't have a problem with it, it makes it easier.
So if you're going to have a spell be a spell that works the same no matter the power source along with reliable casting there's only so much you can do. Meanwhile you might as well ask why we have classes at all - they're all just slight variations on a handful of themes after all. That's a bigger can of worms though and while there are certainly different approaches, every approach has trade-offs with benefits and costs associated and "better or worse" will likely be in the eye of the beholder.