ところだった => About to… N3
Will, Decision, Doing
さっぱりだ => There is nothing exciting or positive at all N2
Emphasize negative meaning
…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
ばかりだ => Just N3
Result status
...はむりだ... => impossible N4
Description
ところだった => was just about to do something; something almost happened N3
~みこみだ => ~Expected N1
Determined, determined
限りだ => to feel strongly N1
…だって => Annoyance, Exasperation N2
Speculation
…だけのことだ => That's all, just... N2
Position, perspective