Morphology 

I think that a few words should be written about endings of various kinds, and of distinctions of cases.  There seems to be some misunderstandings here and there in the project, with claims that "German has preserved the proto-germanic grammar" or similarly.  This is not 100% true (although German certainly has preserved much of the grammar).  I therefore think that mentioning the instrumental case, and the fact that there were more different endings in OHG than in modern High German is interesting enough to merit a section.  I do not think we should try to reproduce all paradigms; but some representative sample.  (However, I just know them from rather old books; and these books do not very carefully distinguish different epochs or dialects within the OHG.)
I had in mind an example like this:

    Sing.    Pl. N    tag    taga G    tages    tago D    tage    tagum A    tag    taga I    tagu    (not distinguishable)

and a few words on how e.g. 1:st and 3:rd p. pl. of the verbs then were quite distinct (in pres. ind. normally ending in -mes and -nt, and in pret. -m and -n, respectively); where in the modern language a final -m is replaced by an -n, making the forms indistinguishable.  Is this sensible?