Player Handbook questions and clarifications

Greetings everyone. The Player Handbook just released on August 24th is wonderful. As I read through it, certain questions come up. Hopefully someone can answer.
1) In regards to Death Mages, on page 127 concerning power addition - it points out that the TN check is 10+ 1/2 the overall amount of CE harvested. If this is the case, then the average amount of CE from a person is 100CE(if they pull from the death of a person in one round). This then means that the TN is 10+50. Only way to pass is to roll a natural 20. Pretty much means that 19 people/creatures would need to die before mage would gain control again. Statically speaking that is. I don't believe this was the intended result of the game. My guess, TN should be 10 +1/2 of Con of sacrifice.
2) Second question deals with sources of energy of Sereph touched, Kylen, and powers of light. Is the energy source Divine Source (greater) and Divine Source(lesser) different in regards to energy being added to an amulet. If a Kylen or divine touched charged an amulet from the Divine Source(lesser), then since the energy is divine in nature, do they get the benifit and problems of energy as listed on page 128 for Sereph or Cherubs. Or is this issue only is present with sources from Divine Source(greater). - You could even take this further and if Divine soure greater provides 5 extra additions to conjures using energy, divine source lesser provides 3 and elemental energy 0 additions.
I look forward to clarification.
1) In regards to Death Mages, on page 127 concerning power addition - it points out that the TN check is 10+ 1/2 the overall amount of CE harvested. If this is the case, then the average amount of CE from a person is 100CE(if they pull from the death of a person in one round). This then means that the TN is 10+50. Only way to pass is to roll a natural 20. Pretty much means that 19 people/creatures would need to die before mage would gain control again. Statically speaking that is. I don't believe this was the intended result of the game. My guess, TN should be 10 +1/2 of Con of sacrifice.
2) Second question deals with sources of energy of Sereph touched, Kylen, and powers of light. Is the energy source Divine Source (greater) and Divine Source(lesser) different in regards to energy being added to an amulet. If a Kylen or divine touched charged an amulet from the Divine Source(lesser), then since the energy is divine in nature, do they get the benifit and problems of energy as listed on page 128 for Sereph or Cherubs. Or is this issue only is present with sources from Divine Source(greater). - You could even take this further and if Divine soure greater provides 5 extra additions to conjures using energy, divine source lesser provides 3 and elemental energy 0 additions.
I look forward to clarification.