…ときたひには => when it comes to N2
Story topic
ひとつには…ためである => Partly because of ... N3
Cause, reason
ひとつ => A little N3
Repetition, habit
~ひいては => by extension N1
Add
...たいんですが => want N4
How to say the beginning
の[末「すえ」]/た[末「すえ」] => conclusion N2
Reason, Result, Response
ぜひ => by all means; certainly; definitely ~ N5
いたします => to do (polite form of します) N4
たいです => want to do something N5
いただきます => to receive N4
Benefit
ひじょうに => very; extremely; exceedingly N3
Description
~仮に...とすれば / としたら / とする => ~If..., suppose... N1
Condition (hypothetical condition)