I began with a "rebase sub-romans" project. I then decided most figures were unsuitable, and that I could replace them with more suitable minis from my late imperial spares, mainly HaT. (Back in the early oughties I put a lot of effort into the old Atlantic Romans converting them, but their time is up.) I've packed the unusable minis away in a bag labelled "junk" but you never know, I might be able to use them in some future project.
During October I worked on the 7Hd and 4Bd side of things, while reading sources, and came to realize I could extend the project to a morph of all of mid, late, patrician and sub-roman sides.
I used OneNote to record needs, existing, and available, and found this reasonably manageable.