At this point, it's a pretty much established fact that its turret geometry plain sucks balls. It's got amateur written all over it.
This was copied from Leopard2. The Germans were certainly no amateurs & they still haven't changed it!.. I have a theory about this.
The
magenta line is -15° representing max
possible gun depression. Only if the gunner-sight is placed on the front can it look down at such angle (
blue). If it were on the top it would only be able to look down -10° (
green)...
Now that the design issue exists they might as well make the most of it!
At that angle, standing in a dip in ground or against a ridge, not only very little of it will be visible but any penetration would actually go out of the roof.
I'm not sure why nobody cares about the gun-mantle though. Leopard, Leclerc, even T-90 has the centre of silhouette left thin. Otherwise not that much of weak spots compared to T-XX.