Boone if NCR
E.D.E & Lily if anything else.
If you didn't play NV and exclusively wear the NCR veteran ranger armour what are you playing the game for. Sniper = best way to play the game.
The best way to play the game is going solo after working for Mr. House and getting yourself an army of robots that have all been upgraded and taking control of Vegas. NCR and the rest are all assholes who don't deserve the place. The only people I remotely identified with was the boomers as tbh I'd happily let them take control of the strip and vegas at large and just have them blast away anything that tries to get close and just let in the lucky few tbh.
After all, watching the boomers bomb the fuck outta the dam and then killing the Legion before the NCR bust down the doors and be like "nibba you better stop" and then just referring them to the GIANT ARMY OF ROBOTS STANDING DIRECTLY BEHIND THEM is by far the best ending to a game I've ever played. If only we'd have gotten the 'after campaign' gameplay that Obsidian intended to have that would have let you keep playing and watch as shit changed to show how your ending affected the place it'd have easily landed in my top 3 games.
I wanted to take over the strip and use the army of robots that acted as police to basically do the same thing but across the entirety of the mojave, making it a safe place by eradicating all of the irradiated shit that lived there. Especially ghouls.
though that being said I did do a Legion run as a yandere girl for caesar that exclusively used melee which was pretty fun.