@211Ritsuki
Mmm, don't think making a notes page is a bother for the readers.
There are people that are seriously into those. Nowadays the credits/notes page is part of the special flavor, flair of the translator. Most followers likes them.
Either that being jokes, trivia or citations.
I tend to find lots of jokes in the comments like "i read this manga only for the credits page" hahaha.
I concur that maybe the golden ratio would be to put notes for words or concepts that are required to understand the story and pictures at the end.
The guy that translates Ueno-san always comments on how and why he translated certain terms and what do they mean, sometimes with examples.
If you feel like adding additional info, that's something i'm pretty sure everyone will appreciate a lot.