Stubborn Mobs

We all know that during the night, things like zombies, skeletons, spiders, creepers and all sorts of mean things appear during the night right? We also know that they burn in daylight right? Yeah, but there is only on problem... If you're too far... they DONT BURN. You can be 20 blocks from them and they dont have a care in the world. That is until you hit them, or get closer. It Makes it harder to try and find resources in the day when there are still zombies and skeletons lurking in broad daylight. Sure they dont pose much of a threat and they still do burn, but what if you we're on one point of health, and you saw skeletons ( three to four ) on your front steps? what are you gonna do? Lets also say you have no bow, what then? sheild? maybe. but skeletons strafe, they'll get behind you. I'm getting of track... point is, please fix the mobs so that they burn in daylight no matter WHERE they are? thank you.