I think that the point of all this is that you can't ever tell if you are ready for a fight or not, there should be a way to find out or escape. And you could randomise ambushes after each load.
One, there's a flee button
Two, you have plenty of saves
Three, moving away from planned encounters is a terrible idea; least of all cause they wouldn't be as fun or fulfilling to overcome
Four, you can gauge the general level needdd for an area just be looking at one or two enemy levels
