the picture not gonna show you the error of purple lines, it's from aftermarket screen, in version 3 its corrected but I have the same issue on v2 (I also have replaced my screen) I corrected lowering the values of colours to 203 195 189 in kernel...
the screen touch is a hardware problem try to lower screen brightness and put a dark screensaver, it's somehow related with the contrast of the screen but not sure how to solve it completely the previously and a screen protector only make it usabl...
try to flash and do a full wipe then test it again if keeps the same it's probably a hardware problem, the touch can be minimize with screen protector but the battery an camera it's hard to manage.
sorry for my bad English it's not my native langu
ok, the camera overheating is normal if you're using it for long time, the battery may be for time of use this phone is 4 years old and battery begin to fail try some app to calibrate it if doesn't work replace it and screen touch have you change ...
you forgot to hide imei in last image