I would in order prefer the following:
1. disable output-translations by default.
I think we can't do that, because of things like system-installed source code and users who use both clisp and ecl (that share the .fas suffix) or i386 and x86-64 SBCL (that share the .fasl suffix), etc. If a novice wants to know where the fasls are, I prefer to give the explanation once than to give plenty of explanations with as many special rules.
2. provide a clean disable-output-translations.
Done in 1.665: (asdf:disable-output-translations)
I would far prefer that, as in the old days, the novice user would encounter output-translations only if he or she needs them (e.g., is an oddball like me running multiple lisp implementations).
See above. [ François-René ÐVB Rideau | Reflection&Cybernethics | http://fare.tunes.org ] Always remember that you are unique. Just like everyone else.