Personal oppinion, but its already very easy as it is. You see that perception is rolled and you can simply give guidance to your second character. Resetting it on rest is barely more a nusiance than reloading a save - so from my perspective it doesn't solve much except for those who want to say they don't save scum, while just repeating all tests with 4 attempts after each rest. I'd guess you can anyhow have a new set of companions run through the area as well.
I wouldn't mind if they do it like in Pathfinder WotR where you get a new attempt after each level up.
