Tim,
As with Libre has anyone looked at dialogs for OpenOffice? Apache openoffice 3.4 was just released and it works great:
http://www.openoffice.org/download/
It is much.., much... more responsive that LO and avoids a couple of nasty formatting bugs that affect line/character spacing in LO. Apache OO does have a nice GTK file browser by default (like the tde browser), but it would be nice to have an integrated browser for AOO as well.