That is indeed a side effect but generally the quality of the metadata will be better especially for popular shows and the more obscure shows tend to only exist and have metadata in one of the sources. This hasn’t been a real issue with movies and we’ll continue to improve the agents if it does turn out to be an annoyance.
You can do that in the forum but we can only use what exists upstream so we encourage users to contribute to TMDB and/or TVDB and we’ll pick up the changes. If our data doesn’t make sense with what exists in the sources then you can report that here in the forum.
Do you mean every time a change is made in one of the sources? No because that happens very often but we do plan to add periodic refreshes in PMS and you can manually refresh your library at any time.
