Pooler, isn't it possible to sign Electrum for Mac?
I get a security warning announcing that the app is from an unidentified developer because the app isn't signed.
Also isn't it possible to to make a thing which shows something like drag into an /Applications shortcut?
I'm not an Apple developer and I only have very minimal experience working with Macs, so I have no idea about your second question.
Regarding code signing, if some trusted Apple developer can help with that, just let me know. By the way, last time I checked, the OS X binary of Electrum for Bitcoin was also unsigned. From a strictly technical point of view, it's no big deal: we have always used GPG to sign packages and it works just fine. But then of course not everybody knows how to verify these signatures.