If you think about it, in some ways, a class system is an antithesis to the freedom of an open world game.
Given what has been said, I'd guess that your character will develop in a more fluid, natural way.
Yes and no what about changing midway ? To complement with another class skill your character.
If radiant only give you missions related to warrior mage and thief, then what of hybrids ?
And how will they, i hope they have tought of that, stop a mage for example that keep casting the same spell time and again meaningfullessly just to speed up.Well i shouldn t care you say, but thosekind of people are the one that cry and then end destroying entire systems that where balanced over all the aspects of the system.
The assembling of this 2 pieces are more restrictive than the begin one way and build what you want attributes/skills based gameplay, or at least it what it seems.
Assembling the pieces is more important than looking at only 1 aspect.
So far we got few information but many ??? are surging due to how the combinations seems to lack proper integration.