I personally like this kind of project, as it represents a gateway between the Internet world and real life. I don't know if it really feasible to develop an entire network of ATMs but a few ones would already be a big step forward IMO. I could give visibility to Nimiq. (But it would be quite costly, though.)
Also, when Nimiq become a bit known, what about negotiating with ATM manufacturers to include Nimiq in their multi-crypto ATMs? I think it can be another possibility (and, I think, a better one, since people are more likely to buy this kind of ATM rather than a Nimiq-only ATM).
We have been discussing with ATM manufacturers but haven't reach any solid agreement. It makes more sense to find a way to add it in existing ATM instead of having a NIM-only ATM because, as you say, investment could make it unfeasible (considering the ATMs start at 7.5k). If you have any more input send it this way and I'll make sure it reaches the Community Board for the meeting next week.