I say use him, though wait and see if there are any other civs who need a leader more desperately.
Also, a small suggestion. Add some 'only for scenario purposes' civs. I have some in mind:
EU (Including Norway and Swiss),
NAFTA (could just use US),
Arab League,
UNASUR,
CIS (could use Russia),
African Union (excluding Arab League Countries),
SCO (excluding Russia, including North Korea),
SAARC,
PIF (including Japan and South-Korea) and
ASEAN. To make them non-playable in the general game is no problem at all. Just set 0 to the leaderavaibility, aiplayable and playable tags on the civs xml. They can still be played in scenarios by setting the playable line in the WB file to playable=1. This way we could include futuristic scenarios AND give the civs there real UUs (such as Eurofighter Typhoon for EU etc.). The civs I proposed also covers the most of the Worlds areas to, so create a futuristic scenario with a world divided by alliances near the outbreak of a third world war would then be wery possible. If you add this, I would be more than happy to create the scenario, and the best is that since these nations is only for scenario purposes, they do not need national units, as they cover such waste areas. Instead we could just use much of the unitarts you included for other civs:
EU: European (from BTS) Unit Art (could also use Germany or France)
African Union: Ethiopia Unit Art or Zulu Unit Art
NAFTA: US unit Art
UNASUR: Inca Unit Art
CIS: Russian Unit Art
Arab League: Arabian Unit Art
SCO: China Unit Art
SAARC: India Unit Art
PIF: ??
ASEAN: Khmer Unit Art
I hope this is enough to convince you to add them. We could as well replace the Strategy section with a large ONLY FOR SCENARIO PURPOSES in the civilopedia, if that would make you feel better.