What is the benefit of using Kodi without Himedia wrapper ?
More player functionality with things like subtitles, audiosync and also DVD menu.
Yup. Automatic subtitles download / integration with opensibtitles.org (and others), is extremely important for people who rely on subs. Also audio sync is very handy sometimes.
And also don't forget the zoom in/out and pixel ratio, with which you can virtually shape the picture anyway you like, if you need to. For example, try to watch 'The Hatefull Eight', or 'La La Land', both shot in Cinemascope 1.55/1 in a 16/9 TV.. It looks small.. You need to zoom in a little bit.