To return to the OP, I do hope the Speccie doesn't fold.
Though some of their contributors are undoubtedly fuddy-duddies (Charles Moore's columns have given me a deeper appreciation of Craig Brown's pastiches of his style in the Eye), they do seem to be the publication that's currently doing the best job of offering a range of views.
For example, last year there was an open letter from the writer to his Corbynista nephew. Some good points were made, but he was beginning to overreach towards the end. Next issue featured the reply of the Corbynista nephew! Slightly mischievous, but a balance that you're unlikely to see in the Mail or the Graun.
Regarding the current ding-dong, it strikes me that the GC debate is like the Brexit one in that, whichever side you take, you find yourself deeply frustrated with some politicians on 'your' side that you previously respected whilst simultaneously finding that politicians belonging to parties hitherto beyond your political pale are making decent points.
To chuck up all this brave new world of new thinking regarding difficult issues in favour of blind political tribalism is, in my opinion, a mistake.