ところだった => About to… N3
Will, Decision, Doing
といえば/というと/といったら => N3
Considering, Concerning
といったところだ => Display an amount/level/degree A (程度) N1
Degree/ Level/Amount
めったにない => Rarely N3
Degree. Level, Amount
っこない => A is definitely not possible N2
Potential, Possibility
といったらない/といったらありはしない => Extremely A, Very A, A beyond description N1
Degree/ Level/Amount
ことになっている => Plan, rule, decide N2
Information, Report
に[沿「そ」]って/に[沿「そ」]い/に[沿「そ」]う/に[沿「そ」]った => Along with A; In line with A N2
Based, Focused, Depending on
に[限「かぎ」]った[事「こと」]ではない => It's not limited to A, it's not only A N1
Degree/ Level/Amount
としたところで、としたって => Even from the perspective of A; Even in the case of A N1
Considering/ Concerning
に[越「こ」]したことはない => It's better if A, it's better if it's A N1
Comparison/ Exchange
た[方「ほう」]がいい => It would be better to A N4
Can, Should, Must