Yes
Yes, eventually but not right away
War Machine should hold Iron man's place til she's ready
Or Toni Ho
Or Rescue (Pepper Potts)
Or Victor von doom lol
Tony should stay as an avenger
Bring in a new character to join the avengers
Bring back Iron Patriot
Someone else should join (eg:Iron lad)
Riri should never be an Avenger
No Iron People on the avengers for the time being