I can sympathize with you somewhat. I like lisp but I'm not a deep lisper. Personally I'd would like it more if it could play nice with Python modules. But that sort of thing is not where the real Arc "action" is at the moment.
Arc takes lisp in a new direction. The right thing to be doing now is not to get buried in details like foreign function interfaces but instead to see where pg's ideas lead. From what I can tell he's doing the same sort of thing Roger Hui and Arthur Whitney did when they took APL in the direction of J and Kx respectively - they let go of a few old things in order to make new ideas fit in better.
The theme of this party is succinctness. Let's all see how well that works out. How low can you go?