Manual installation is very tedious and time consuming unfortunately, especially now that they changed the format somehow. Unfortunately (or fortunately perhaps), MSFS is a work in progress. Imagine changing your setup to the new format, and then ASOBO update the SDK, and perhaps they revert to the old format (not likely, but who knows?). AIGAIM-OCI although freeware, took a lot of time to be developed for p3d, that is why the developer (Kai), and the rest of the modellers and collaborators at AIG are waiting for the SDK to take a final (or a more stable) form, before they commit more time and resources to MSFS. Don’t forget that there is also real life for most of them (and us) out there.