Hi,
I have given this further consideration, and probably won't implement it because it requires quite a bit of effort (and cross-checking that I didn't introduce any oversights) with no gain:
Essentially, it is a "no op" suggestion in the best case (nothing changes, because after assigning the proper classes to these abilities, I would need to increase the class points required for every skill by one, as these skills are free to obtain, id est, they do not cost skill points).
In all other cases it allows warriors to obtain certain skills earlier than intended, which is what I feel this suggestion is really about (even though you didn't mention that little fact).