Plus RedBull pushed drivers too soon a couple of times; Gasly and Kvyat. One year seems to be too short, one and a half (Vettel and Verstappen) or two (Ricciardo) has more succes. Pushing Albon after only half a season would be killing another talent and Kvyat has been thrown around a lot trough the years.
I think for 2020 Albon and Kvyat stay at STR and they find a nice Mark Webber to sit next to Verstappen, on a one year contract with an option if Verstappen leaves for Mercedes in 2021. Someone like Hulk, Bottas or Perez.