I do not believe this development would be of any benefit to the village or for any people who may plan to move into these new developments. Canewdon is not a commuter village as other towns nearby like Rochford, Hockley, Ashingdon and even Southend have more than enough space and the necessary services to provide for more housing. Canewdon is a small isolated place that would suffer with an increase in it's population. The roads would need far more upkeep than they currently get, the bus service would have to be greatly improved, recycling and waste disposal would have to be increased. All of these factors surely would cancel out the need for further development? Can the local school handle a much greater influx of children? Will nearby secondary schools be happy to provide bus services for extra pupils should it be needed?
All this just adds to the fact that although the planned site appears that it won't overly encroach on the sight of the church or the views over the farmers fields it undoubtedly will. It will add more congestion to an already small and unfit access road that leads to the church and will make the crossroads on the entrance to the village look like an urban environment rather than a village in the countryside.
Basically I do not think this proposition would be good for the village or in keeping with it's aesthetic.