I honestly think they learned from their mistakes with all the filler. They have enough time before they get to Blue Vortex. Plus this standalone 4 part joint drops in September which should give them more time to iron things out.
Instead of going weekly for 5 or 6 years, I hope they're thinking of going the OPM or Thousand Years Blood War route. Drop 12 solid episodes that all have meaning and we'll see y'all next year.