させておく => Leave it alone, don't interfere N2
Position, perspective
せられたい => Please..., Let me... N3
Order
ませんでした => Did not... N5
Negation in the past
~Vた + せつな => moment, instant, juncture N1
Beyond expectations
させていただけませんか => Could you please let me do... N4
おもったら => just when; no sooner than ~ N2
Things do not match the prediction
いただけませんか => could you please ~ N4
(か)とおもうと / (か)とおもったら => just when; no sooner than ~ N2
Simultaneously
とはくらべ[物「もの」]にならない => It's no match for A N1
Comparison/ Exchange
~ました/~ませんでした => Polite, past form of verb N5
Verb suffixes
…とばかりおもっていた => Thought that ... N3
Speculation
…ものとおもっていた => Thought it was... N2
Vague