I also thought it was odd that they mention 'Founding Member' implying significant benefits but then not mention any details. If it's just about the $100, then I'd call it a 'limited-time new customer bonus'.

I'm still not sure I see a tremendous utility with this account/service. For dining and travel expenses, I'm still going to use a no-fee card to get points. For an ex-pat paying rent and utility bills, for example, it seems a local bank account would be used (if not even required). There's an argument that Denizen provides access to your cash at a competitive exchange rate, but I'm skeptical as to how significant of an issue that is for most folks.