Sadly, I think that ship has sailed. Before the UC, Books 5 and 6 had only ever managed to get a Meg floppy, and Book 7 had never been reprinted.
Much as I hate to agree the choice to stick 5 & 6 in floppy does tend to indicate that they had no intention of continuing the run of trades

Which is shame as the art in that final story was stunning stuff.
anyone know why we not getting Defoe in its entirety? Really love this series and these hardbacks have been amazing.
I guess someone decided that there wasn't space to spread it over 3 books which inevitably meant skipping the end due to lack of space. I mean we could get a book of mixed Mills endings in the next extension there's the final Slaine story and this final Defoe. I'm not going to hold my breath though I suspect we won't be seeing either of those.