why was ulysses cut anyways? he would have been the only pro legion (pro-pro legion, like how boone is via the NCR), and according to how hard it was to remove him, he must have been pretty far into the development process.
None of the information we have about Ulysses says he'd have been pro-legion.
The one quote we have from him
The day I set my flag down, it'll be over my body or over a nation I believe in. Shows [to me at least]that he'd be open to any faction. He's looking for a nation to believe in. Being the 3 of clubs isn't evidence he's pro-legion. If he had a red bull on his back and not an American flag there might be something to him being pro-legion. So I take his quote as evidence to who he is. A man searching for a nation to believe in
According to Chris Avellone, "tearing him out of the game was
almost as hard as putting him in"
It was easier to remove him then to finish him. The obvious answer as to why they didn't finish him was they didn't have the time too.