[plt-scheme] Scheme sources readability

Hello,

Probably not PLT specific, but hope not too OT:

After many years of programming i found new-old
scheme world very fascinating. One thing i still
do not like here is source code readability.
What about docstrings, design patterns (like GoF),
coding conventions. Are those non-applicable to scheme ?
Or scheme evolution is still on its early stages ?

--
Bohdan