Paul,

My vote will surprise no one.

> in my opinion, it would be nice to have
>
> 1) an eventually huge XSLT file. It's probably easier for most
> people to comment out or tweak things that are already there than to
> add the "extra" fields they need from scratch.

+1

The other option would quickly make it impossible for people who are concerned about MARC display (people like me, for example) to contribute what you call "bugfixes". I use fields most other libraries do not, so my stylesheets will diverge. Also, I would argue that not displaying as called for in bib standards *is* a bug.
>
> 2) a "local" XSLT file that survives updates unharmed where people
> can put the files they tweaked to their likings (I think this was
> talked about while ago, I don't know if it exists already).

This would be nice, but at present it is not possible, and I don't think anyone is working on it.

Regards,
Jared