They (and others, I'm sure) called Claire's blood being useful for not only REGENERATING but RESTORING completely.
And did anyone else pick up on the comment about there always being a partner in the Company? One of them and one of "us". So I'm going to assume that Mohinder and HRG don't have any "powers" such that we know them. But does it take someeone special to do what they do? Someone who believes without doubt that these Heroes exist? Could that explain maybe why there are some in the Company that don't seem to have powers... like Angela Petrelli?
Anyway, I have thoughts. Two more episodes to see what will be revealed.
And no, I don't think that Adam is Peter's dad. The writers are not that kind!