I can see the logic behind only allowing edits when a certain number of characters are changed, but sometimes it seems there's a perfectly valid reason for editing a post and just changing a couple of characters (for example putting backticks around a couple of portions of code to make it more readable or correcting a spelling mistake.)

Is this restriction lifted when reputation climbs higher, or does it stay? And if it stays permanently, perhaps it should be lifted at some point? Minor edits can be just as useful as major ones.