[jpsdr]

I don't think movie will go to 10-bit because there is no real benefit on it. Unfortunately, anime have some "exceptions" that work for them, and result in encode breaking HW compatibility.
- Level, or more precisely Ref frames. In standard footage, it's very rare to really have more than 4 ref frames, so encoding with more than 4 ref frame is very unlikely to help, so level 4.1 with max ref frames of 4 is good. Anime of course are an exception, with very often of "long" some static scene, so encoding with 16 ref frame have a true benefit, which result on smaller file or better quality for the same size. HW compatibility is already broken with a lot of encode on level 5.0 or with more than 4 ref frames (often 16) [Note : it's for 1080p].
- 10-bit. Anime, in the case of recent digital production (=> absolutely NO noise !), encoding in 10-bit seems also to have some benefit, less banding and smaller file or better quality. Have any noise or not anime (only anime, not even CG), you loose these benefits.

I gave up a long time ago to watch anime on HW players because of subtitles, none are able to handle all the SSA features used properly and to have the necessary timing accuracy to display them properly. Before even encoders break HW compatibility with either level>4.1 or 10-bit.