All good ideas. However nobody in the Lisp community seems to actually want to do the work. Despite claims that Lisp is so much more powerful than anything else that it should be “trivial” to do. A bit like people introducing themselves as book writers, without actually ever, you know, having written any books. They are brilliant writers in their own heads but just can’t seems to actually deliver their masterpieces to the real world. While dismissing the rest of us who actually deliver every day.
It is hard for me to want to work on an open source Lisp IDE, when I can pay a relatively small amount of money in return for a professional and well-maintained commercial product. It just doesn't make sense for me. If all of the commercial Lisp vendors vanished one day, then it would become much more important.