It's okay-ish. Maybe .44" too large for me and even if I'm willing to put that aside I'd rather if they just round the battery off to 5000mAh for that much chassis estate. Just because.
My other suspicion is that Xiaomi probably have considered a sub 6" Max and went against it to avoid from a potential avalanche of "This is Redmi Note 4! Like wtf!!!" hollering by the horde. Though I still maintain that Mi Max' 32GB (SD650) model is just an enlarged Redmi Note 3 with a bigger batt that makes 0 sense to compel any kenzo 3GB/32GB model user enough for an upgrade.