Allow mixed page sizes in a Bloom Book

Hi, I’d like to request that we could have different page sizes in the same Bloom book. For example, I have a print Picture Dictionary with A4 portrait and A3 landscape. When printed, the two halves of the A3 landscapes are like two A4 portrait layout pages side by side. I would like to have the same layout in my Bloom Picture Dictionary.
Thanks for considering this request. Cheers, Ken