Earlier quoted context omitted.
Me too, I hope there will be a replacement with the same low friction. I've been using IFTTT with RSS feeds to add serialized stories to my Kobo as they release.
Could you share the flow if someone wanted to replicate it for their own Kobo?
I have an RSS feed from RoyalRoad that new episodes come in on. Using IFTTT, I have an action set up to, whenever a new item comes in on that feed, add the _URL_ of it to my Pocket account. Then, Kobo just syncs the Pocket articles automatically, and the new episode is added.