If the site allowed minor edits--the correction of up to three language errors--by folks who have reached a certain point level or number of edits, we might see many posts get cleaned up very quickly and readability improved significantly.
Speed-bump grammar mistakes--verb tense, missing definite and indefinite articles, a missing comma, typos, egregious spelling mistakes, capitalization errors, etc.--would start to disappear silently. The reward of +2 could go to folks who do work above the threshold of the minor edit.
Right now it seems that correcting the one or two language mistakes that sometimes pop up in a piece--no matter how glaring--amounts to a "trivial" edit. Why not set clear standards for minor edits and then trust certain users to fix trivial mistakes quickly?