This is not an engine limitation. It takes less than half of a working day to implement this and then couple of hours to test it. Stop defending large software companies with your uneducated opinions.
I always like when people talk about development of a game like BG3 as if it's nothing and they could do it in five minutes. Can't wait to see the games you make.
Not what he said, though. And if you think it is an unsurmountable technical limitation then why don't you explain why?
I can believe that there are limitations I don't understand, but as a layman, I don't understand how this is different from any other item in the game that gives you spells, or from new spells gained (you can choose!) when leveling up...
But being able to ritual cast is far more important than a couple cantrips anyways, and why people actually choose this pact imo
