Has anyone here heard of the temperate belts of the globe, being split up in cool-temperate and warm-temperate, which then get subcategorized into continental and oceanic climates within the temperate frame?
(Moray, I know you know)
Anyway, MOVING those northwards and southwards will only give you any proper landmass as temperate in the former USSR and Canada, - both cool and up to permafrost.
The permafrost will start off as a rotting bog or swamp with rapidly changing vegetation.
On latitudes nearer to the middle, you will see increased heats eventually, and where land is barren it might go the desert way. The belt would then move both north and south.
So, a slight warming may be good for the northern territories. It won't be good much above that.
And at one point, there is bound to be a change of entire weathersystems as well as ocean currents. There you're talking big stuff.