This is my first born son.
He rules significant part of my empire, is considered powerful vassal and holds honorary title despot.
Yes he is not ideal physically but why he is completely excluded from succession candidates?
Because he is dwarf?
I can see only my two other sons in that list but not this one.
What traits completely makes you out of imperial succession?
Eunuch, blind what understandable and proven.
Incapable maybe.
What else?
Bastard, imbecile, weak?
I clearly had elected a left-handed emperor.