Hi Joe, and welcome back Blue (yay Brian!). This has been a hope of mine since the crashing disappointment when the hardbound was canceled.
Best I can suggest: pick on the publisher, also, pick on your favorite small presses who do select editions.
I tried (admittedly years ago) to ‘revert’ the hardcover rights they had not used to open the way for doing a special edition. Got the NO.
It’s the same old story: numbers talk, and frankly, relative to other series, we don’t have them right now. Many series get ‘anniversary’ editions - Wars of Light and Shadows would be in it’s ‘Thirtieth’ anniversary (based on pub date for Curse of the Mistwraith) in 2023…if we could break the piggy bank in the numbers department, anything is possible. Best I can do is write the best finale I can to make this happen. Without the books being featured in shops – the series is invisible except by word of mouth. That pretty much handcuffs me, since self promo burns out readers faster than anything.
I would do all I could (and will continue to push the publisher) to see this effort happen. Thanks again for your interest and support!