Unnecessary. Especially if it has nothing to do with the plot.

well, the plot might also focus on Princess trying 2 show everybody tht she's nothing like King, tht she's a better wolf. so if they really do the sequel like this and if it had this scene, it'll show tht Humphrey might probably b the first 2 grow a heart on Princess

I think it would focus on Runt trying to convince his parents and the pack that she's not an evil wolf. Since she was the one who took care of him and treated him as if he was her own pup.
So yep, Runt is Princess's only hope if she is to be accepted into the pack.

it's kinda the same thing. ya know, nobody trusts Princess when she says she's nothing like her dad and Runt tries convince the others
but i'm just sayin: it wouldn't b bad if Humphrey started 2 trust Princess

it would be nice but I don't think he'll trust her

That would be stupid.