User blog comment:Hyperborean/"The House of Hades" – official expectations blog/@comment-2.50.239.45-20130331135159/@comment-3146930-20130331144142

Hey! I am Jasim... I was thinking....
 * 1) HoH will most likely have Jason, Frank, and Hazel. Don't expect a POV from Nico.
 * 2) Unknown at this time
 * 3) They plan on attacking a month after the events of the MoA, so we most likely won't see the whole battle and will only see parts in vision.
 * 4) What about Connor Stoll? That isn't really a question.
 * 5) Not as long as their children are fighting, but they will help against the Gigantes
 * 6) Most likely by the end of the series, as closing Olympus in the first place almost got them killed.
 * 7) Possibly, she was said to wake up in a month so it really depends on how long it takes the group to reach the House of Hades.
 * 8) Take it to Greece to do something, then take it to Olympus.
 * 9) That is what the statue is supposed to do, but it is never really explained how in the books.
 * 10) Unknown at this time. Prophecy meanings normally aren't clear until after they happen.
 * 11) 11.It is possible, but his ultimate fate is left unknown.

And it is actually officially claimed that Percy is stronger then Jason, so I'm not sure where you get your information.