First the MUI package already have the proofing tools included.
My full package of Office 2010 exists of 5 packages,
Office 2010 Global
Office 2010 Word template batch (every language)
Office 2010 Powerpoint templates (every language)
JunkMail reporting Addin
Office 2010 Mui (every language)
I added he Global package with the English templates and the junkmail to one task and publish it in the Software Portal as Global Office.
Mui I added with templates of language and publish it to the Software Portal as separate task, as some users want their language and some want english