Hi Robert! Firstly a huge thanks for your excellent tools. I use them regularly and extensively (especially the main Survey Me! tool) to inform in-person surveys and find mistakes.
Over the past few months I’ve just come up with a (hopefully relatively small) feature request. But if not possible, don’t worry. 
On the map, when clicking on an icon, it brings up a pop-up/call-out (whatever you call them), e.g. " Missing Public Defibrillator: …(context)". For me, currently, the next thing I always do is check on Mapillary to see if there is already imagery in this area, since often a new survey may not be needed. Currently I have to find the location manually every time. However, since it’s possible to link to lat/long co-ordinates on the Mapillary map, and since you presumably already have these co-ordinates of that object/missing object (the location of the pin on your map), might it perhaps be possible to have an extra link in the popup/callout going to Mapillary map using the same co-ordinates? E.g. https://www.mapillary.com/app/?lat=52.05227&lng=1.1474&z=19 (the z=19 is just the zoom level of the map, useful to pinpoint the immediate surroundings)
Just a thought. Thank you again!