I love Elder Scrolls as well, but I kind of wish people would just give him this for now and stop badgering him about the next game. We know we're getting it, we know it won't be for a while, and yes, that sucks, but let the dude enjoy his passion project.
This has been a decades-long project for him, creatively and conceptually. Something he wanted before he even got a job at Bethesda. Like, there's a significant amount of history with him wanting to make a space RPG, but only when "the tech is advanced enough".
Whether it lives up to expectations is another story. No game ever lives up to every expectation, but even if this lives up to a few, I think he'll consider it a success.
My only concern about post-TES: VI is who takes over for the series. I kind of trust Howard to put someone he believes in to take over, but it's not going to be the same regardless. Maybe someone who works on ESO would be good, but I don't know.
But in the meantime, I'm just going to (hopefully) enjoy his passion project and I can wait a few more years for the next Elder Scrolls. I know it's become kind of a meme that it'll be another decade or two, but I honestly don't think it'll be that long.