It wouldn't feel dangerous to me. It'd feel incredibly annoying since a quest that could take 10 minutes tops now take another 10 minutes from me either fighting things needlessly and getting nothing in return or resorting to Sold Snaking everywhere just to save a few minutes. Dangerous mobs don't feel engaging to me if it's something you'd have to deal with every single time you have to do something. For someone who is not maxed out, the paltry EXP might be worth it, but once someone hits 50, they want to ignore everything and have the option to do so rather than being forced to engage.