Despite what my edits come across as, they weren't implemented haphazardly as I had identified the places and other roads they'd the roads I worked on would connect to and looked at AADT data, rather than going in and changing roads based on first impressions. You could say I half-assed upgrading the roads under the regard that I only upgraded some of the roads and left some other nearby ones untouched, but it's a gradual process which I've been making across the area which I had previously done with around Hamilton, Middletown, Forest Park, and closer to the downtown area of Cincinnati.

Regarding the road classification hierarchy, major intercity roads regardless of who maintains them are better candidates for being upgraded to trunk if their purpose is to connect other cities. The way I see it collector roads should be tertiary, major collectors/minor arterials should be secondary, and major arterials should be primary. In my opinion, however, this should be regardless of how the road is signed or maintained, what the functional classification is, etc., because that ultimately isn't always consistent with how roads are used for travelling.

For the most part, I understand the road hierarchy, but I'm also not understanding whether I should revert this back to how it was before like you mentioned in the first comment or "stick around to finish the job" by continuing to work upon it and upgrade the now under-classified roads.