The old one is not quite true since we do have the *C.sbi files that are already a very simple partial incremental update. That might grow with the 2.0 structure, but not
For anything else, I'll repeat a concern I mentioned at the blog discussion, bit which you seem to have ignored:
Avira can afford sending a dozen expensive lawyers after anyone stealing the database. We don't want to.Or updates would be incremental as you said, in which case the client would have to be able to encrypt as well as decrypt, which is an unnecessary security risk.
(well, anything can be hacked, and just decryption would be sufficient for database stealers)
Oh, and I just see that its still the same thing as on the blog, so you totally ignored my other arguments, as for example memory usage, as well.
You see, a discussion means, well, discussing, not repeatedly saying "I want this" without even responding to other arguments.