Feedback Follow-up

I wanted to be clear as to the feedback I am looking for. I am trying to determine is any specific Powers are too weak or too powerful.

I am looking for things like:

Is Regeneration too good (heals too fast)? Does it seem fair to have a prerequisite Talent which is potentially rendered useless?
Do Attribute Drain and Siphon have too small of an effect?
Is Magical Aptitude too versatile, too limiting or too complex for the casual player?
Is Power Reserve too versatile, too limiting or too complex for the casual player?

As far as character construction and relative power to each other, XP should bear out. Basic Talents, Powers and Resources each cost 15 XP. All rank 1 item should be approximately the same power level. Higher ranks in an item still cost 15 XP but might yield a greater benefit than another rank 1 it. That said,  it is not an exact science.

Some examples:

Malachai has expended 4 ranks (60 XP) into being a sorcerer - Rank 3 Blood Legacy:Fey and 1 Rank Magical Aptitude: Pyromancy. This gives him +4 bonuses to both Intelligence and Charisma. This significantly bonuses his skills and his roll for casting rituals. The plus side is that he can do a wide scope of things but the downside is that he can be slowed down by having to successfully activate powers and may suffer damage to do so on a more timely manner. Many of his powers could benefit other characters as well but would again slow down the activation process. He can be slow to start but powerful once he is rolling. He is versatile and at the same time limited as to what he can do at the same time (limited to 3 rituals active at the same time).

Anku has expended 4 ranks in Talents and Powers that make him one of the most physically capable characters of the group. He also 2 ranks in Artifacts that grant a significant boost to combat (highest attack of the group) and defense of self and others.

Leech is physically tough and can increase that with the use of his Drain and Siphon powers (4 ranks - 60 XP). Even at full bloat, he is in the middle of the pack with attack strength but defensively creeps to the top.

Unlike in other games, flaws do not necessarily equal a specific weakness. While they can be, the majority are role playing opportunities that earn you Style Points during play.

I would also like to address the grass is greener sentiment I am seeing. In the near future, I would like to perform a character swap to allow other folks to play the other characters. I think this may help to gain a better understanding if the perceived inequities between the characters are real and if they are mechanical, conceptual or execution based. I suspect that the same character in the hands of a different player may seem significantly different. This should prove instructive to both me as the GM and designer and you are the players.