The problem with the tadpole is that they cant make it a timed thing.
You rest 20 times in act1 and in act3 you have no time? Regame 40hours?
You rest 2000 times in act1 looking for your "hidden" timer and restart ?
The only possible way is maybe a hidden Questcounter and after Number X you are 1 level above someone Rush the game and you have malus or something to normalize the Player strength but this time its a tadpole "effect".
But in general a "timed" thing without near future effect is a bad developer choice.