I am happy with Neovim in a terminal too. But I wanted I wanted it running as a separate application that I could launch and switch to, so I downloaded the iTerm2 source code and changed the icon and application name and created a profile that just runs Neovim. I find this works well, but maybe someone knows a simpler way, or a generic way, to do this on OS X?
I think you can use an applescript for that. I think you can compile the applescript to a .app and then run it. But it's been a while since I was in OSX
