I don't think we disagree either, I'm sorry if I was coming across that way.

How about this, every long rest you take stat damage; such as -1 CON, or every use of the Tadpole tests WIS, on a fail you take 1 permanent WIS damage, until a point at which you no longer have the choice *not* to use the tadpole. All these healers we run to in Act 1 can't cure us, but they can heal some of this damage(resetting the clock somewhat), or give us a bonus during these rolls. Ability score damage is very outre in current D&D but it certainly would up the peril of having been experimented by some Illithids.
It's really the lack of fear where I have issues, you don't have to be good-aligned to not want to use the tadpole, especially after the first time, just look at our evil/neutral party, only Astarion is gung-ho about using the tadpole, and there's probably more going on there too.
If we were undergoing a clear process, one that active use of the tadpole accelerated, you'd be getting more out our "Hook"/ Ticking Clock.

As for BG2, like I said, I was a more naive gamer then, but even now, especially with the game "checking in" with Imoen at Spellhold, I am fully on board for making a bee-line to her rescue, but I understand how on a metanarrative level you understand that there is really no consequence for not saving Imoen as soon as possible, but in terms of having a clear goal and narrative justification to do so in a timely manner, BG:2 does it better than 1 or 3(so far)