Does there need to be? They're so widespread at this point that there is little incentive for me to apply for TechStars Austin- I'm in New York, so I'd just apply for TechStars NYC. If the two have different cultures it isn't going to affect me.
If the quality is always top notch, no issue. If the culture of excellence scales outward, great. If you are going through to make great connections in your town & get great mentorship for your business for 3 months, great. But if you are attaching a brand that you intend to open doors/ get meetings/ etc, then the brand needs to stay consistently top notch.
[I'm not saying TechStars is not consistently top notch, just saying culture (or maybe performance) across all programs matters]
Differences are still possible while have a one consistent overriding culture, which is our goal.
We want TS NYC to feel distinctive and especially suited for NY but there there is still a common denominator there that is the same as in TS London.