Review comments

looks good. A little spelling + to modules that maybe should be upgraded
I don't think it's safe at this moment to update the expire module to a new major version (as ding2 is going into production).

The expire developers also writes: There is no migration map from 7.x-1.x to 7.x-2.x branch.

So this should wait until later, where there is more time to test an upgrade to 2.0. I will upgrade the module to stable 1.0 :-)