Which basemap did you use? The biggest disadvantage of using Leaflet is that you lose access to Google's maps and APIs. That said, Leaflet is much much easier to debug than Google.
I'm interested to know if this doesn't actually violate the google maps terms of service:
https://developers.google.com/maps/terms#10-license-restrict...
10.4(e): No use of Content with a non-Google map. You must not use the Content in a Maps API Implementation that contains a non-Google map.
10.5(f): No incorporating Google software into other software. You will not incorporate any software provided as part of the Service into other software.