I'm on my first playthrough in 2020. Not being able to cast a spell before combat does not make any sense, IMHO breaks immersion (I'm a priest but I've forgotten how to cast a spell without an enemy in sight, even though I know where about to fight a dragon) and triggers my greatest gaming peeve....designers telling me how to play my game (it feels like a baker decreeing what sandwich I can make with the bread I bought, or Honda telling me what route to take to work).
I've read the comments of those that support it and I'm not swayed. If it was an option players would have the choice. Those that don't like it, don't do it and visa versa.
It feels like telling a soldier "go on patrol but don't don your body armour before contact, oh and don't load a magazine or rack a round in the chamber until AFTER you're under fire".
Maybe it's pissing me off because the first character the Master Below one punches is my priest, even though I initiate battle with my main, a pally standing on the opposite side of the dragon. I run around to res him and by then half the party is dead. Oh and my party is level 11.