I don't know about syndicated, but I've pondered the streaming soap issue before and ultimately I think it still comes down to the Prospect Park soaps on Hulu - mismanaged by the higher-ups financially, but ahead of their time by a year or maybe just six to eight months. Soap-esque shows like Degrassi, etc., or even serial-trending sitcoms like Fuller House or One Day at a Time, succeed with arcs now on Netflix and Hulu in blocks of programming.
With soaps, I would want to try to preserve at least some of the day-to-day format. It can never be what it is on network, but Netflix has experimented with releasing stuff weekly. I think that can be done with a soap - 3-5 eps a week or even day by day. I'd also try to refine what Prospect Park sort of attempted in a backwards way. They sort of fell into it because they ran out of money, but IIRC they made maybe 30-40 episodes of both AMC and OLTL. For better or worse, a pre-filmed block close to that is what I would attempt to release in segments to streaming - something people can watch over a month or two months with defined arcs and plots set against a larger ongoing canvas. Maybe their release is staggered week to week or every few weeks, something to preserve momentum and a sense of a daily world. Maybe that's impossible, but I'd try it. You get a bigger bang for your buck than the average streaming sitcom. And it can go on hiatus for months after - it's not going to run perpetually, 365 days a year anymore. That's not possible.