Been using this ROM on my MI 4 for past 12 hours and here are my findings



There are no groundbreaking bugs as is and it can definitely be used as a daily driver.



As mentioned by the OP, video recording does not work but if you download a custom camera app from play store (I tried Footrej).. It seems to work properly. I haven't tried with other apps though. But the camera is still horrible. It is not able to focus properly and there's also a lot of noise.

Clock app FC can be fixed by downloading the Clock app by Google from Play Store and disabling the system one as both are exactly the same but there won't be any FCs in the Play Store one



Performance wise it's pretty decent, though it does hang sometimes here and there. But considering this is literally the first ROM for Nougat for cancro, it's excellent! (I wish there was a x.75 speed for animations *sigh*)



Battery life is also okay-ish. I won't say it's the best but it's not terrible either.



As for other stuff, there is a lot of delay when waking up device through dt2w or s2w. You might wanna look into that. And as already recognized by the OP, the backlight is not working though I hadn't really noticed it before others pointed it out.



P.S. Suggestions in Settings are damn annoying! Is there any way to disable them?