The X points are inconsequential gravel roads. I see no need to make them active.
The top one would break up a 5.7 mile gap with no points. That's a major reason to make it 'active'. The bottom one is 3.7 miles.
I don't have a problem with splitting the interchange, but ramps in both directions are signed Exit 83. I can make the south part 8thSt if there's that much of a problem having it centered.
Simple, make one 83 & the other 83A then. We do this all the time for split exits like this.
And yeah, if you don't want to split an interchange like this, at least centering it on a route we map (if 1 is part of said interchange) so that a graph connection can be maintained is preferred, especially due to the academic factor with Jim's classes. If there's no intersecting route there that we map, then centering is normally fine.