I like the idea......
I am not sure how I would promote your idea, and I am not sure you are going to have an idea every week to write about, they will probably come in bunches once in a while.
There are many people looking for ideas...... and there are probably a lot of people with ideas to share with you........ I would have no idea as to how to get them to engage with you.
To have a place to describe ideas as they come to you is a great thing and I am sure you will attract a following. That following will be one that you can sell to if you can get them to join with you in the sharing of ideas.
Enjoy your new project.!!