Please note that this forum is no longer active. In the future, please visit us at https://productforums.google.com/forum/#!forum/map-maker
The theatre edit will have to be done by someone other than myself, you are outside of my area.
You are correct that the church is a duplicate. When you are told there is a duplicate, it includes a link to the existing feature. The existing church is a few feet away. There is too much information on the map for everything to be displayed, so algorithms must choose what people are most likely seeking. This is done largely based on the same factors as what makes items come up in regular Google Search. To see if there was a feature already there you could also have right clicked at the spot and selected "Find near this point", which would have lead you to https://www.google.com/mapmaker?gw=39&fid=0x884bb9511138f2f1:0x5d2da857760927f4
. Please undo your edit to add the feature again.
Please post that first request at the new forum. Please ensure that you follow the instructions for creating a request; namely in that you should include the location in the title.