so why aren't you using Dr Scheme directly?
[edit in response to pg's edit]
to be specific, why don't you have arc include the various high level modularity and semantic abstractions that Dr Scheme exposes? eg 1) a powerful high level macrosystem 2) ways of specifying / enforcing module interfaces 3) everything else that i'm forgetting
1) Because I don't think you want anything more "powerful" than defmacro-style macros. 2) Because at this stage I'm focusing mostly on making programs shorter.
