Hello there !
I'd like to point up how RGBA channels are handled. I'm a game artist who is used to heavily work with channels and being able to copy/paste to swap them, get data, transfer from one texture to another is crucial. And I work my 2D source files either in .PSD or .TGA, so import/Export should be seamless and without any compression.
Please improve how channels are imported when an alpha channel is there (currently it destroys data and using a complex workaround is not a great solution. At least it shows how much we need it)
Please also reach at least what photoshop do with channels pannel (copy/paste, display, ux design). I'm not against a better-than-photoshop pannel of course, but until then, a simple copy would greatly help