Riot, Is Knowing Who In Your Game Is Premade Useful Information Or Is It Not?

I ask this because there is no way of knowing who in your game is premade unless they announce it themselves or if they have the same club tag. If you honestly believe that it's not worth knowing then I guess that's fine but I have a feeling that's not the case. I myself at least play a bit differently if I know the laner I'm against is grouped with the jg, or if the bot lane is grouped etc. For example I expect the people grouped to have better coordination then what I'd normally expect from solos, so I play with a mindset that's more aware of plays that require more coordination such as high hp tower dives, tp ganks, baron/drag sneaks, deathbrushs, or any early game cheese. I'm not saying every premade out there does more calculated things than normal but when I get caught off-guard by things like this and realize afterward that they were premade I just get that "oh, now that makes sense" feeling and wonder how I might've reacted differently had I known ahead of time that they were premade.

In short it feels like being a premade and having the other team being unaware has the possibility of holding an unintended advantage and I feel allowing everyone to know who's premade is justified if that is the case.