We may see a few script parameters that will allow for a workaround to adding new talents, abilities and attributes, though it won't use the existing UI. No idea about any timeframe for this, but it's a possibility that would be a fairly simple solution to what would otherwise require a whole lot of reworking of the game's internals.
I did wonder about asking You, specialised in saving the day. Still, the developers have the resources and skills to do this via later patches. No one is asking for this to happen NOW. But eventually, yes.
