Comment 10 for bug 670758

For the DejaVu font project, the only restriction regarding coverage of additions is that one can only add a character if also adding its equivalent in another (if it is encoded), and doing so in all styles of the same typeface.
So there are never issues like having Ɛ but not ɛ.

We don't care about Unicode blocks, they are arbitrary once you go beyond scripts, but rather we care that characters are usable when added, not when the whole script is done.

If the policy for Ubuntu fonts is to have Unicode block full, that's fine. But if you don't follow it yourselfes, I don't suppose I'd have to either.