I agree. Although you can enter Turn mode anywhere at any time, which essentially pauses the game, it is still very clunky and doesn't always work right. Some characters, for whatever reason, decide not to enter turn mode and wind up springing traps or something stupid and I have to reload.
I do fond myself looking for a dialogue to pause the game, but even that doesn't always work.
One time, fighting the hag, beat her and was talking to her corpse. Wyll suddenly started making noises. I noticed him running on the background with a cloud over his head. While I was talking to the hag, he had run through a poison cloud and was dying. I had to switch to a character not in the dialogue and hurry them over to him to aid him because he had collapsed and was dying. I had sold my Revive scrolls so luckily I had noticed him dying in time. It is not cool that the game doesn't even really pause for cutscenes and in this case it was almost a reload moment.