How would you build it differently than the YC we know today?
But as someone from a nation relatively low in talent and funding, what I'd like to do is a "bottom feeder" accelerator. Instead of trying to build unicorns, we'd aim for ideas that are too small for VCs. Ideas that can take $10k and aim for a $50k exit.
This would reduce the pressure on trying to build unicorns, and instead encourage them to build small, tight communities and good service, which ironically gives them resistance vs giant corporates.
It would probably cover things like Evernote, Trello, Slack, Zenefits, CRMs - hyperfocused small ideas that don't need a lot of talent to get off the ground, can hit a global market at low cost.