i feel like he had potential but they inserted him and played him off as "superman's boyfriend who can't be physically hurt and is therefore a good boyfriend for superman" and it fucked up anything he could have had going for him
and then in secret six he's very.... pro murder of some people, pro going against all of jon's morals, and spends a lot of time telling jon how wrong he is which is like
i mean idk unpopular opinion but teddy only became his own guy after the skrull prince stuff. they tried to have him have conflict in v2 but it still centered on billy and then became about david being a homewrecker
eh they just flipped the age gap so now jon is three years older than damian rather than younger which isn't an awful age gap if they're..... allowed to get out of their late teens. but also it's comics so i'm surprised they've been allowed to age as much as they have been