Comment 9 for bug 75478

Inkscape was chosen as the default vector drawing program (and I believe has been that way from the first release of Ubuntu). The Open Office Draw menu was removed because it duplicated functionality from Inkscape (which is the program most people would use when invoking the drawing program directly). When Inkscape was chosen, it was more full featured and more well known - I don't know if that has changed now. As mentioned above, it is certainly possible to add Open Office Draw to the menu from the menu editor for those people who prefer it as their main vector drawing program.

The OpenOffice Math entry was removed on the belief that very few people (if any) invoked it directly - people who used it would like do so from within an Open Office document or presentation and its presence in the menu was unnecessary.