Not saying this is still 100% out of the possibility since it looks like this has improved in the last couple months but Ashley really commented on this wrapper the last time it was brought up. I personally think the only way we this wrapper would be supported is if someone does it themselves like ejecta was done i believe
In our experience non-browser HTML5 wrappers are a minefield of compatibility issues, bugs and performance problems of their own (like the fact CocoonJS never seemed to figure out why memory management is important). I am convinced there is no point supporting any new non-browser wrappers for Construct 2 games, and phasing out the existing ones when the browser technology catches up, which will happen with iOS 8 and Android L.
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