Well, as a Python programmer, I'd be all for that...
However, I don't think that's really Arc's goals, which I think were foremost to create a language that PG would like to program in. If he wanted to program in Python, he would. Also, the existing Arc community seems largely drawn from disenchanted Lispers who really like the syntax and macros of Lisp, but don't want to deal with onions in the existing languages.