My reaction to this idea depends a lot on how the sequence gets written.

If at every step along the way you appear to be heading towards a known goal, I'm happy to go along for the ride.

If you start to sound like you're wandering, or have gotten lost in the weeds, or make key assertions I reject and don't dispose of my objections, or I otherwise lose faith that you know where you're going, then having a roadmap becomes important.

Also, if your up-front list of claims turns out to be a bunch of stuff I think is unremarkable, I'll be less interested in reading the posts.

OTOH, if I follow you through the entire argument for an endpoint I think is unremarkable, I'll still be less interested, but it would be too late to act on that basis.