>   Is there anyway to build a 'poppler-tqt3' for those
> apps that used to require poppler-qt3?

To my knowledge, there no longer is any need to rebuild poppler to provide (T)Qt3 support. Poppler support is needed in two modules: tdegraphics and koffice (chalk). The hooks for tdegraphics are already provided:

main/tdegraphics/kfile-plugins/dependencies/poppler-tqt

The poppler support neede for chalk remains missing: bug report 783.

Possibly poppler support is needed elsewhere, but I have not yet noticed any breakage anywhere.

Darrell