I believe I can help you in some regard. I don't usually play Legion, but there are alot of good mods out there! I'll post the links below. Enjoy!
Caesars New Regime:
http://www.nexusmods.com/newvegas/mods/45557/?
More Perks:
http://www.nexusmods.com/newvegas/mods/35979/?
Shifting Shadows:
http://www.nexusmods.com/newvegas/mods/58059/?
Assassin's Arsenal:
http://www.nexusmods.com/newvegas/mods/44701/?
Hitman-Agent 47:
http://www.nexusmods.com/newvegas/mods/40859/?
Black Robes:
http://www.nexusmods.com/newvegas/mods/40099/?
SGDs Operative Suit:
http://www.nexusmods.com/newvegas/mods/42597/?
Casino Heist:
http://www.nexusmods.com/newvegas/mods/50342/?
New Vegas Bounties I (I recommend getting the other two as well.):
http://www.nexusmods.com/newvegas/mods/37310/?