てさしあげる => Do for N4
Give and take advice
しかも => Not only A, but B as well N2
(Not)only, (Not) even
げ => Looks A N2
Adjectival, Descriptions
をもとに/をもとにして => A as a basis for B N2
Based, Focused, Depending on
おかげで => Because of A, B; Thanks to A, B N3
Reason, Result, Response
~かもしれない => Might A, maybe A, perhaps A N4
Sentence Endings
さしあげる => Give B to A (A is a third party, not yourself) N4
Give and take advice
といえども => Even if A, even though A N1
Contrast/Surprise
かも[知「し」]れない => Might A, maybe A, perhaps A N3
Sentence Endings
もしも~なら => If A... N3
Conditional, While
にもまして => More than the time/period A, B (condition) N1
Comparison/ Exchange
もし~としても => Even if A... (chances of A are pretty low) N3
Not only, Not even