I'm on Blogger comments and post-archive now, and it appears to be operational. I've also edited all the posts back to Easter Sunday to give each post a proper "title" and to enable comments. I'll do a little each night for as long as my patience lasts, but I do not expect to get through my entire archives with this project.
If you've a hankering to comment on an older post without comment access, don't hesitate to send an email.
Have fun, and give it a good testing.