中 => While (Lasting) N3
Continuous
途中で/途中に => on the way; in the middle of ~ N4
中 => During the period (Term) N3
Time
~のなんのと => For example... N1
Demonstrate by example
(の中)で~が一番~です => out of this group, [A] is best N5
~ものとする => understood as ~ N1
Consider it
(の) なら~するな => If...then don't... N3
Condition (hypothetical condition)
(のこと) となると => when it comes to; in such a case; if that happens N2
Story topic
を中心に => focused on; centered on~ N2
ときているから/ときているので => because of ~ N1
(の) なら~と => If... then... (Ideally) N3
Suggestion
最中に => while; during; in the middle of ~ N3