They are getting interest through their traction in other cities. Since they are already in 20 cities and have approximately half a million users if you look at their Android app (https://play.google.com/store/apps/details?id=co.hinge.mobile.android), they can simply wait until one city "tips". ...
What do you/the founders want to do? The scenarios you describe all have their own positives and negatives, and all represent very different paths. I'd like to dive more into your statement, "we have tried in the past to get our marketing team up and selling..." I suspect your marketing team wa...