I would have given Seifer more relevance to the plot, at least. I mean, looking back over every scene he's in...does he ever do ANYTHING important to the story? Yeah, he's cool, but if you would have removed him completely from the game, there isn't one part or character that would have changed for it. Squall wouldn't have a scar, but beyond that, Seifer is just a dog for the Sorceresses that we have to make heel before we fight the real battle. He's nothing but a glorified mid-boss, and never get's any higher than that. A love triangle would have been an improvement to him. In fact, I think Seifer's presence in the game is just a remnant of that idea, and they liked him so much the didn't want to get rid of him altogether.