~たいしたことはない => trivial,not amounting to much N1
Emphasize the negative meaning
~としたことが => ~ surprised N1
Surprised
にこたえ(て) => in response to ~ N2
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
としたところで/としたって/にしたところで/にしたって => Even if; Even supposing that ~ N1
~にかぎったことではない => not limited to only ~ N1
Correction
に越したことはない => It’s best that, There’s nothing better than ~ N2
たところ => just finished doing, was just doing N2
~みこみがたつ => have a good prospect N1
Expected
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
ところだった => About to… N3
Will, Decision, Doing
といったところだ => at the most; no more than​; at best; roughly; about ~ N1
More or less in quantity