They still have a lot of those series left to run due to falling behind with their low publishing frequency as well as the 9th Doctor ongoing after the first story, the 3rd, 4th, 7th, 8th and multidoctor stories. Possibly even the digital only Cornell 1st Doctor story and FCBD material.
They could go monthly now and get a couple of years out of the unprinted back catalogue running alongside the new stories.
Last Edit: Nov 24, 2018 22:31:54 GMT by The Doctor
I think if they'd seen any milage in the classic Doctor titles they'd have tried that a long time ago. I used to hope for that. I think the fact there's a new doctor to boost sales is just about keeping the book off life support in this country. Seems to be doing better in the States.