I. - Front panel
DiapDealer introduced a brilliant front panel

with the version 0.2 of his DocXimport plugin (see screenshot). Such a kind of front panel would also very well suit ODTimport.
1. - Choice between EPUB2 and EPUB3 is now difficult for the average user. It could be made much easier (provided we use the 1.5.2. version)
2. - There are two major configuration files interesting the user:
config.css and
epub.css. However we can imagine there could exist several files of this kind, varying according the intended output (with or without fonts, dropcaps, illustrated book, etc.). This way the user would be able to choice which
config.css or
epub.css to use just by selecting a new path. If nothing is selected, it would mean that he intends to use the two current files.
II. - Other goodies
Further, there are some very few "weaknesses" of writer2xhtml that I know how to address everytime I produce an EPUB. However, they may pose a problem for beginners.
Resources:
Now, when I wish to embed fonts, the plugin allows me only to insert some @font-face declarations in
epub.css. It would be good to be able to also designate and import in the EPUB the content of a "Resource" folder with fonts and the
com.apple.ibooks.display-options.xml file. We may need to tick a box and select a path for this.
cm to em:
writer2xhtml offers the choice of px or cm for style sheet dimension units. Neither is really satisfying (relative units are better). I use the DiapDealer Toolbag in the Calibre Editor to convert cm to
em in all style sheets. The conversion is not mathematically rigorous but practically it is very useful. We can imagine it could be automatically performed once the conversion to EPUB has been done provided the user ticked previously such an option.
xhtml files
writer2xhtml 1.5.2. produces EPUB3 with
html(5) files (but EPUB2 with
xhtml files). Theses files respect also the
xhtml format that Epubcheck now recommends to write in such a case. Sigil can rename all the text files extension from
html to
xhtml. If this was done automatically after EPUB conversion, this would be a plus.