ないものでもない/ないでもない => A is not completely impossible N1
Need/Requirements
もしないで => Even though (subject) doesn't/don't A N1
Contrast/Surprise
ぬきにして/~ぬきで => Exclude A; Stop/end A; Without A N2
Miscellaneous
もしも~なら => If A... N3
Conditional, While
までもない => It's not necessary for A N1
Need/Requirements
ないまでも => Even if A isn't done N1
(Not)only , (Not) even
でも[差「さ」]し[支「つか」]えない => It's OK if A, it doesn't matter if A N1
Need/Requirements
というものではない => Not sure, not means N2
Information, Report
べきだ/べきではない => Should do A; Must do A, Should not do A; Must not do A N3
Needs, Requirement
もし~たなら => If A … N3
Conditional, While
[少「すこ」]しも~ない => Not (even a little) A N3
Not only, Not even
~かもしれない => Might A, maybe A, perhaps A N4
Sentence Endings