Let's alter these to be relevant:
Basic MechanicsSpecialisationsIf you have a suitable specialisation, tens count for 2 successes.
WillpowerSpending a point of Willpower on a roll adds a single automatic success.
Spending a point of Willpower adds three additional dice.
My reasoning: I don't like the idea that spending a point of Willpoer can guarantee you will succeed on a roll, even a difficulty 10 roll. This rule makes Willpower more varied - it may add more successes than the old system, but they are never guaranteed. It does not remove the tension so much.
BotchesEvery '1' rolled removes a success, but you can only botch if you do not roll even a single success.