I updated last week DBIx::Placeholder::Named to version 0.07, which is more compliant with DBI - accepting PlaceholderSuffix and PlaceholderPrefix keys - after I presented it on Amsterdam.pm meeting. I can say that I was surprised that nobody yelled with some module doing the exact same thing...
And continuing the things-I-would-like-to-see-on-DBI I wrote DBIx::Dictionary, which tries to add, in the same clean way DBIx::Placeholder::Named does with named placeholders, query dictionary functionality.
It integrates well with DBIx::Placeholder::Named, and currently only supports Config::General configuration files. I'm planning to add support for some SQL compliant configuration file.
I'd like to hear from you what you think about those modules!