While this definitely seems like a step in the right direction, it still seems like you're too caught up in your own world as a maker
Likely true... making my first steps and I think this is how you start. You slowly have to get out of your comfort zone.

Sharing your development process is interesting to other makers and helps you build your network within our community, but it won't do you much good in terms of attracting customers
Makes sense. For me personally, when I have someone to talk to (a bit) about a project, I easier stay involved with it. Maybe this is a personal "hack" then :D

Rather than starting with the idea, I'd start with the problem you're trying to solve and the audience you're trying to reach.
Like boiling down the problem and possible solution to 1-2 sentences and approach potential future customers and ask if they agree to have this problem at all?