ところだった => About to… N3
Will, Decision, Doing
…ば…ところだ(った) => If… (counterfactual condition), then would be ~ N3
Condition (condition contrary to reality)
というところだ/といったところだ => at the most; no more than​; at best; roughl N1
... ことだ => should N3
Order
ところだった => was just about to do something; something almost happened N3
~みこみだ => ~Expected N1
Determined, determined
…だって => Annoyance, Exasperation N2
Speculation
…だけのことだ => That's all, just... N2
Position, perspective
ことだし => Because...so... N2
Cause, reason
ことだろう => Perhaps... N3
Speculation
といったところだ => at the most; no more than​; at best; roughly; about ~ N1
More or less in quantity
ことだろう => how…!; what…! N2
Exclamatory