Looks like a very impressive package for open source software, but not compatible with OSX 10.9 and 10.10 according to Graeme's website. Looks to me as if it could become viable competition if someone took-up the challenge of creating a user-friendly GUI for it. For that they would likely need to charge a license fee to cover the cost of the sheer effort that would be involved, but could be worthwhile depending on how much for what. I think it's hard to mainstream command-line software in this era - just the thought of it, even though you may well be right about the factors involved with using it.