1-I guess you missed where Jesus said to tell the VISION to no one. As well as the penalty for Adam & Eve's rebellion being DEATH, rathewr than living in a different form, as well as how Adam came to BE a soul- that no imaginary 'immortal soul' was put in him...And all the details from Genesis to Revelation showing that the dead -GASP!- are REALLY DEAD (not alive), and that a Day of Resurrection and Judgment is ahead....
2- Little detail is given as to what God has his messengers (angels) do.
3- Who rules is a lot of guesswork. The 12 Tribes in the Symbolic Vision we know as Revelation had 2 tribes that were NEVER REALLY TRIBES in the ORIGINAL nation. Jesus said it was not his plkace to choose who would rule with him- but his father's. We just have to wait and see.
We do know there will be some that will rule in heaven, that the rest will inherit the earth- and that MOST will remain dead- forever!