I get the impression Britons versus Saxons won't be that different to Anglo-Saxons versus Vikings? The Romans do seem interesting with their artillery and I believe they get cataphracts?
That's probably a pretty fair assessment, at least the impression I got from looking at the boards. I suppose that tends to be the strategy of raiders and island dwellers! Then again, they will behave quite differently in terms of set-up (big units vs close deployment) and thankfully (as my opponent is growing his Saxon horde) the invaders have no access to crazy berserkers with a massive hoard of re-rollable dice! Anyway, the Romans can have cataphracts indeed; hadn't looked at them much as they're a 'named' unit, but they're pretty interesting: aside from being a bit tougher, they also allow warriors in the army to be mounted, but more importantly, all abilities on the board that reduce the impetus value will do so by 1 point less, which is rather a massive boost. Don't suppose GB's next plastic set will be Late Roman cavalry? Because I have a sudden desire to have a pile of them...
Any commentary on the Picts, think they appeal to me as a painter more than anything else, but would like to know how they play too.
Haven't looked at them into any great detail (guess I'll have done a full review before too long after all!), but they're along the lines of Welsh and Irish as a skirmishy force that likes terrain, if you're familiar with those. Very much melee oriented however (although one unit of levy can have crossbows), with some offensive and defensive abilities, as well as various tricksy movement ones. The most eye-catching aspect is the ability for a warlord to ride into battle on a chariot! A more commanding presence (increased We Obey range), but no Side-by-Side. An additional benefit is the ability to retreat L after a lost combat - heroically running away, I suppose...