てさしあげる => Do for N4
Give and take advice
たが[最後「さいご」] => Once A occurs, B happens N1
Information, Report
もさることながら => While A is (true), B also; A is one thing, but B (as well) N1
Conditional, While
て[下「くだ」]さる => Do for someone N4
Give and take advice
がっている => Want, like N4
Secondary Verb
とされる => It is said/believed/thought that A N1
Information, Report
さえ/にさえ/でさえ => Even N3
Not only, Not even
がっている => Wants to A N3
Will, Decision, Doing
がちです/がちになる => A tends to become/happen/occur N2
Potential, Possibility
を[余儀「よぎ」]なくされる => Must do A N1
Will, Decision, Doing
たことがある => Have done A before N4
Situations and Experiences
さて => So N2
Miscellaneous